Useful in Malayalam

Malayalam words whose English meaning includes “useful”:

ഉപയുക്ത (upayuktha) — Useful, suitable, appropriate.
പ്രയോജനപ്പെടുക (prayojanappeduka) — Be useful, beneficial.
പ്രായോഗികം (praayogikam) — That which is practicable, workable or useful, viable.