dearth, deficiency
A close antonym would be shrinkage.
enlarge
plentiful
An antonym of the word learn is the word misunderstand.
Few. An antonym is a word that means the opposite.
Current or present is the closest antonym for the word former.
A close antonym would be shrinkage.
INSIGNIFICANT?
Quiet
Clearness.
conceited
closed
depressed
ineffective, ineffectual, unable, impuissant, Impotent
Non-communicative
forgettable or insignificant
unsurprised