(suff.) activator. Converts any word into an active verb.  When present na will always be the last syllable of the word unless it is the prejorative form of the word (ends in t).

Ex. 

iti (run) -> itina (running)

elena (happy) -> eleana: actively being happy (happying)

blue-> bluing

cold-> colding

etc. 

Not to be confused with -me which denotes the essence of whatever it suffixes.