What is the meaning of -a?

Used to create genus names from proper nouns

Used to take the form of certain plural Latin-derived taxonomic names

plural of -um

plural of -on

Marks singular nouns, with a foundation in Greek or Latin, often implying femininity, especially when contrasted with words terminating in -us.

Changes an element or substance into an oxide.

Alternative form of 've

Marks nouns, with a foundation in Italian, Spanish, or Portuguese, implying femininity.

Added for metrical reasons to songs, poetry and verse, or as an empty filler syllable to other speech.

Clitic form of o' (contraction of of).

to (infinitive marker)

do (infinitive marker)

feminine singular nominative suffixed definite article. the

forms the plural forms for many nouns. -s

Absolutive singular suffix.

Used to form yes/no questions.

forms agent nouns referring to male people

forms nouns referring to results of processes

plural of -um

feminine of -us

Related to, in the manner of, of. Ending for all adjectives in Esperanto.

Belonging to, of. Ending for all possessive pronouns in Esperanto.

Used to form the ordinal numeral.

-kind of. Ending of all correlatives of kind in Esperanto.

Used to form verbs from nouns.

Used to form adverbs from adjectives.

Forms the partitive case of nouns, adjectives, numbers and some pronouns.

Forms the short form of the first infinitive of verbs.

forms the third-person singular past historic of -er verbs

Alternative form of during vowel harmony with back vowels.

neutral, unmarked tense-aspect marker

Used to form the partitive case: part of

First infinitive marker

Form of after the vowels A / I / O / U.

and (attached only to čəd, čəxʷ, čəɬ & čələp)

the (definite article for common nouns)

nominalizes the action of the verb

indicates the place of the verb

indicates the time of the action of the verb

forms ordinal numbers

Forms nouns denoting the action of the suffixed verb; -ing, -tion

the, Definite marker used for

the definite singular of (strong) feminine nouns.

the definite plural of strong neuter nouns.

the dative singular case of strong masculine nouns.

Used to form definite singular dative case of weak masculine and neuter nouns

-ed, Used for:

  1. the past tense of a-verbs.
  2. the supines of a-verbs and some preterite-present verbs (e.g. har bada, kasta, kunna, skulla, vilja).
  3. the past participles of a-verbs.
  4. adjectives (e.g. grepa, heilhjarta).

the past tense of a-verbs.

the supines of a-verbs and some preterite-present verbs (e.g. har bada, kasta, kunna, skulla, vilja).

the past participles of a-verbs.

adjectives (e.g. grepa, heilhjarta).

Used to form an infinitive form for most verbs. When using split infinitive, this only applies to a select group.

Used to form singular indefinite feminine form of some pronouns and adjectives (e.g. inga, lita, noka etc.).

plural of -um

plural of -on

Used as an ending of weak nouns and adjectives. Used for:

  1. the singular of weak feminine nouns, indefinite (non-standard since 2012) and definite forms.
  2. the singular of weak neuter nouns, indefinite and definite forms (e.g. auga, hjarta, øyra).
  3. adverbs ( alternative form of -e).
  4. the singular definite feminine and neuter forms of adjectives.

the singular of weak feminine nouns, indefinite (non-standard since 2012) and definite forms.

the singular of weak neuter nouns, indefinite and definite forms (e.g. auga, hjarta, øyra).

adverbs ( alternative form of -e).

the singular definite feminine and neuter forms of adjectives.

Used to form the feminine indefinite plural of adjectives.

Used to form the genitive plural of nouns.

nominative masculine n-stem ending

used to form the nominative singular n-stem (weak) adjective and subsequent nominalised form

used to form masculine agents, usually from verbs

Ending forming adverbs

Forms the nominative, accusative, and genitive plural of o-stem feminine nouns and u-stem masculine nouns

Forms the genitive plural of a-stem nouns

Forms the genitive and dative singular of u-stem nouns

feminine singular of -o

a suffix indicating the second-person singular present indicative of a verb in -ar

combines with prepositions to form a relative pronoun

forms the comparative degree of some adjectives

indicates negation; does not (Can we add an example for this sense?)

Creates denominative verbs from nouns

Creates factitive verbs from adjectives

Used to make adverbs from adjectives

Occurs in the nominative singular of feminine on-stem nouns

Occurs in the singular of neuter an-stem nouns

indefinite genitive plural

inflection of -i (masculine an-stem nouns):

  1. indefinite oblique singular
  2. indefinite accusative plural

indefinite oblique singular

indefinite accusative plural

indefinite accusative plural of -r (masculine a-stem nouns)

Creates denominative verbs from nouns

Creates factitive verbs from adjectives

forms nouns from a word's stem

forms the gerund of verbs ending in a consonant

Third person singular suffix

Plural suffix (with a-declension nouns)

Oblique case suffix (with a-declension nouns)

Masculine plural agreement suffix

Masculine non-nominative and non-singular agreement suffix

Creates a verb denoting an abundancy of the suffixed noun; -ful

Added to transitive verbs when preceded by the subject pronoun.

Forms the nonpast tense.

Marks imperfective aspect in both the recent and distant past tenses.

Romanization of -𐌰

Possessive (and genitive) suffix:

  1. his, her, its 

    his, her, its 

    -'s, of (third-person singular, single possession)

    -s’, of-s (third-person plural, single possession)

     ago (referring to a preceding point in time considered as an instant)

    for (referring to some duration that precedes the point of time in question)

    of …, out of

    1. Third-person singular personal suffix in back-vowel verbs. Today it can be found in the third-person singular definite forms (indicative past and imperative conjugations) as part of the suffix -ja/-je, -ta/-te.

      Third-person singular personal suffix in back-vowel verbs. Today it can be found in the third-person singular definite forms (indicative past and imperative conjugations) as part of the suffix -ja/-je, -ta/-te.

      Third-person singular personal suffix in back-vowel conjugated infinitives and in the declined and postposition forms of the third-person personal pronoun ő (he/she/it).

      The back-vowel variant of the -a/-e diminutive suffix pair. In the past it could be found in common nouns, as well, but today it is used mostly in given names.

      Used to form the third-person singular indicative past indefinite, for back-vowel verbs. The front-vowel version is -e. The suffix currently used in this place is -t, -tt, or -ott. For the full paradigm, see the usage template.

      Synonym of (present-participle suffix) From a synchronic perspective, it can be viewed as a nominal-forming suffix, preserved in some adjectives and nouns (see below). No longer productive. Its front-vowel version is -e.

      forms verbs from nouns

      Used to form adverbs from adjectives.

      suffix denoting adjective.

      plural ending of certain nouns

      plural ending of adjectives in the nominative, vocative, dative, and strong genitive cases

      genitive singular ending of third-declension nouns

      used with a stem to form a feminine singular noun, usually a deverbal

      used, with a stem, to form the third-person singular present tense of -are verbs

      used, with a stem, to form the second-person singular imperative of -are verbs

      used, with a stem, to form the first-person singular, second-person singular and third-person singular present subjunctive of -ere verbs, and of those -ire verbs that do not insert -isc-

      used, with a stem, to form the third-person singular imperative of -ere verbs, and of those -ire verbs that do not insert -isc-

      inflection of -us:

      1. nominative/vocative feminine singular
      2. nominative/accusative/vocative neuter plural

      nominative/vocative feminine singular

      nominative/accusative/vocative neuter plural

      nominative/accusative/vocative neuter plural of -s

      suffix used to form feminine first-declension nouns

      1. added to the root of a masculine noun denoting a male to form a feminine noun denoting a female counterpart.

        added to the root of a masculine noun denoting a male to form a feminine noun denoting a female counterpart.

        added to the stem of a third-declension noun to adapt its inflection to that of a feminine first-declension noun

        suffix used to form (usually masculine) agent nouns from the roots of (usually compound) verbs

        ablative feminine singular of -us

        suffixed chiefly to the stems of adjectives terminating in -ter, forms adverbs which are frequently also used as prepositions

        second-person singular present active imperative of

        Used to derive feminine nouns from masculine nouns (like English -ess).

        Used to form the feminine forms of most nouns and adjectives.

        Used to form the plurals of some nouns and adjectives.

        Used to form singulatives from collective nouns.

        passive ending

        Forms nouns from verbs, indicating something used for performing the verb.

        Forms nouns from verbs, indicating something that results from having the verb's action performed.

        forms nominative feminine nouns

        forms feminine names from masculine names

        forms feminine nominative and vocative forms of short forms of adjectives

        forms masculine personal agent nouns

        forms feminine nominative and vocative forms of adjectives

        forms collective nouns, causes palatalization

        forms some plural forms, causes palatalization

        used to create the masculine genitive singular, usually of animate nouns, but also of some inanimate nouns

        forms genitive singular of neuter nouns

        used in some adverbial constructions

        forms the nominative plural of neuter nouns

        feminine singular of -o

        forms feminine nouns from adjectives, indicating people having the quality of the source adjective

        a suffix indicating the third-person singular present indicative of a verb in -ar

        forms the second-person singular affirmative imperative of verbs ending in -ar

        forms the first-person singular present subjunctive of verbs ending in -er and -ir

        forms the third-person singular present subjunctive of verbs ending in -er and -ir

        forms the third-person singular affirmative imperative of verbs ending in -er and -ir

        forms the third-person singular negative imperative of verbs ending in -er and -ir

        used in the end of shortenings

        Forms the nominative plural of consonantal oikoclitic nouns

        Forms the accusative singular of unjotated oikoclitic animate feminine nouns

        Forms the feminine singular oblique of consonantal oikoclitic nouns. Displaced by -e in most dialects

        the

        A suffix forming infinitives of many verbs.

        Suffix appended to words (usually verbal stems) to create a feminine noun, usually denoting a relation or to form a proper noun.

        Forms the genitive singular of masculine and neuter nouns and indefinite adjectives.

        forms nouns for young animals and other diminutives

        -ess forms feminine singular nouns

        forms feminine singular adjectives

        forms the third-person singular (also used with usted) present indicative mood of regular -ar verbs

        forms the first and third-person singular (also used with usted) singular present subjunctive mood of '-er and -ir verbs, also used for the imperative mood of usted

        forms the second-person singular imperative mood of -ar verbs

        positive indicative ending for verbs of Bantu origin

        A verb-building suffix that can be added to nouns or adjectives.

        Weak (definite) singular suffix, historically feminine

        Transform an adjective describing a people speaking a language into the noun for that language.

        Definite plural suffix for neuter nouns of the fourth declension with regular plurals in -n, e.g. äpplen (apples) +-a → ‎äpplena (the apples); see also -na.

        Create a noun from a numeral.

        Used to form the dative case

        Used to form gerunds

        Used to form the optative mood of verbs

        A morpheme used to mark the genitive singular of a word (such as a noun, adjective or pronoun). It is also the most common morpheme used in creating innumerable compound words, some of which can be very long

        Forming masculine nouns from verbs and nouns, having the sense of 'tool, object for a specific purpose'.

        Forms verbnouns from verb stems. Usually denotes an action that is often repeated, e.g. frequenting a certain place or gathering a certain item.

        verb suffix for the third-person singular present indicative/future

        verb suffix for the second-person singular present imperative

        verb suffix for the second-person singular present imperative

        used to form the superlative of an adjective of one or two syllables.

        verb suffix for the first-person singular future

        Source: wiktionary.org