deficiency

noun

1 she has a vitamin deficiency in her diet:

insufficiency, lack, shortage, want, dearth, inadequacy, deficit, shortfall;

scarcity, scarceness, scantiness, paucity, absence, undersupply, sparseness, deprivation, meagreness, shortness;

rare exiguity, exiguousness.

▷antonyms surplus.

2 the team's big deficiency was in the front five:

defect, fault, flaw, imperfection, weakness, weak spot/point, inadequacy, shortcoming, limitation, failing.

▷antonyms strength.

deficiency Oxford Dictionary of English