Similarity of adj inadequate
2 senses of inadequate
Sense 1:
inadequate (vs. adequate), unequal
deficient, lacking(predicate), wanting(predicate)incapable, incompetent, unequal to(predicate)short-handed, short-staffed, undermanned, understaffedAlso See: unsatisfactory#1
Sense 2:
inadequate, poor, short
insufficient (vs. sufficient), deficient