deficient

adj 1: inadequate in amount or degree; "a deficient education";

"deficient in common sense"; "lacking in stamina";

"tested and found wanting" [syn: {lacking(p)}, {wanting(p)}]

2: of a quantity not able to fulfill a need or requirement;

"insufficient funds" [syn: {insufficient}] [ant: {sufficient}]

3: falling short of some prescribed norm; "substandard housing"

[syn: {inferior}, {substandard}]