un ample (adjective) insufficient: not enough; lacking
Sinonime: bereft,
defective,
deficient,
destitute,
devoid, drained,
dry,
failing,
faulty,
imperfect,
inadequate,
incapable, incommensurate,
incompetent,
incomplete, infrequent,
meager, minus, out of,
poor,
rare, scant,
scarce,
short, short of,
shy,
thin*, too little too late, unample, unfinished, unfitted, unqualified,
unsatisfactory,
wantingAntonime: adequate,
ample,
enough,
sufficient