What is the meaning of -ar?

Of, near, or pertaining to; adjective suffix appended to various words, often nouns, to make an adjective form. Often added to words of Latin origin, but used with other words also.

(clarification of this definition is needed) Forming nouns such as vicar, exemplar, bursar, etc.

Forms agent nouns.

Used to form names of star types, such as magnetar, collapsar, etc.

suffix used to denote a profession or craft

Postconsonantal form of -ər after the vowels A / I / O / U.

Alternative form of -tar (demonym-forming suffix)

male (animals)

[with verbal noun] about to

-ar; forms adjectives of one form indicating that the noun that is modified by the adjective is pertaining to the root word used to form the adjective

forms nouns indicating where a given crop is grown

forms nouns indicating where something is usually found

forms first conjugation verbs indicating an action related to the root word

Forms first-conjugation verbs.

Suffix meaning many and used to denote a plural.

Used to form regular indefinite plurals of most masculine nouns.

Used to form regular indefinite plurals of some feminine nouns.

Used to form nouns from verbs, a person who performs the action of the verb.

A name suffix, meaning warrior, guardian or spear

forms verbs from nouns or adjectives — forms regular first-conjugation verbs in the impersonal infinitive

forms the first-person singular infinitive of first-conjugation verbs

forms the third-person singular infinitive of first-conjugation verbs

forms adjectives from nouns

plural (clarification of this definition is needed)

genitive (Can we add an example for this sense?)

Suffix appended to words to create a masculine noun.

-ar; forms relational adjectives from nouns

forms first conjugation verbs indicating an action related to the root word

-ary

This ending denotes the present infinitive form of a verb.

Added to a noun root word, this forms a verb meaning to apply or make use of the root.

Added to an adjectival root word, this forms a verb meaning to render/make (adjective) the object of the verb.

noun-forming suffix

Suffix of verbs of the first conjugation

forms verbs from nouns or adjectives — forms regular first-conjugation verbs in the impersonal infinitive

forms the first-person singular infinitive of first-conjugation verbs

forms the third-person singular infinitive of first-conjugation verbs

forms adjectives from nouns, especially those that already contain an L; -ar

Added to a word to denote a profession or craft; -er

Suffix appended to words to create a masculine noun, usually denoting a profession, a person who does something, or an animal who does something.

indicates membership or status

indicates a place where something is grown

forms first conjugation verbs indicating an action related to the root word

Suffix for the indefinite plural form of nouns of the second declension.

Suffix for the present tense, active voice, indicative mood for the absolute majority of Swedish verbs.

Simple present and aorist tense marker.

Makes adjectives out of verbs.

Makes nouns out of verbs.

Derives distributive numbers.

Derives Intransitive verbs from names of colors.

Derives Transitive verbs from nouns.

adjectival suffix

Source: wiktionary.org