dearth, deficiency
A close antonym would be shrinkage.
plentiful
enlarge
A potential antonym of "learn" is "forget" or "unlearn."
Few. An antonym is a word that means the opposite.
A close antonym would be shrinkage.
closed
Quiet
INSIGNIFICANT?
conceited
Current or present is the closest antonym for the word former.
Clearness.
depressed
unsurprised
forgettable or insignificant
rejected.
Non-communicative