What is the meaning of Na-?

un-, non-, in-

-less

The noun article. Added to nouns and verb stems to affirm nominal use. Has an element of definiteness. Also used in derivation.

third person plural agent marker

male prefix added onto human words.

forms adjectives indicating a quality

third person singular nominative proclitic

he, she, it, they (third person singular and plural)

a, the (singular article for common nouns)

added to verbs to make them perfective

added to verbs to mean onto

added to verbs to with various meanings

Forms perfective verbs with the following meanings:

1. (no change in meaning)

   (no change in meaning)

   onto, into

   a little, to begin to

   enough of, a sufficient amount of

   excessively, thoroughly

   added to verbs to make them perfective, often meaning "to do X verb much or enough"

   first-person plural inclusive possessive prefix, our

   second-person plural possessive prefix, your

   third-person plural possessive prefix, their

   first-person plural inclusive possessive prefix, our

   second-person singular clitic, you

   Prefixed to a traditional Chewa clan name to denote a woman belonging to that clan.

   a prefix, often used where English would use a phrasal verb with on

   (as an imperfective verb) (often used with se) intensification: added to mean a lot

   after

   added to verbs to make them perfective

   added to verbs to mean onto

   added to verbs to with various meanings

   Contraction of ni- + -a-.

   Contraction of ni- + -na-.

   used to form complete aspects of verbs prefixed with ma-

   used to form progressive aspects of verbs prefixed with um- or infixed with -um-

   un-, non-, in-

   -less

   with, in company of

   to have

   and (joining individual words)

   with, in company of

   to have

   and (joining individual words)

   also, too

   even (implying an extreme example)

   Source: wiktionary.org