lacuna

1 a falling short of an essential or desirable amount or number attributes many of the nation's problems to a lacuna of leadership at the top Synonyms crunch, dearth, deficit, drought (also drouth), failure, famine, inadequacy, inadequateness, insufficiency, lack, deficiency, paucity, pinch, poverty, scantiness, scarceness, scarcity, shortage, undersupply, wantRelated Words absence, omission; meagerness, poorness, skimpiness; necessity, need, privationNear Antonyms bountifulness, copiousness; excess, overabundance, oversupply, surfeit, surplusAntonyms abundance, adequacy, amplitude, opulence, plenitude, plenty, sufficiency, wealth

2 an incomplete or deficient area a lacuna in its collection of Impressionists that the museum is trying to fill Synonyms hiatus, hole, gap, space, voidRelated Words defectiveness, detriment, disability, failing, fault, impairment, weakness; deficiency, deficit, imperfection, inadequacy, inadequateness, incompleteness, insufficience, insufficiency, lack, need, shortcoming, shortfall, wantNear Antonyms completeness, fullness