| Main Entry: | |
| Part of Speech: | noun |
| Definition: | lack |
| Synonyms: | dearth, deficiency, inability, inadequacy, incompetency, paucity |
| Antonyms: | sufficiency |
| Main Entry: | absence |
| Part of Speech: | noun |
| Definition: | state of lacking something needed or usual |
| Synonyms: | dearth, deficiency, drought, inadequacy, insufficiency, lack, need, omission, privation, unavailability, void, want |
| Antonyms: | abundance, enough, plenty |
| Main Entry: | default |
| Part of Speech: | noun |
| Definition: | failure; want |
| Synonyms: | absence, blemish, blunder, dearth, defect, deficiency, delinquency, dereliction, disregard, error, fault, imperfection, inadequacy, insufficiency, lack, lapse, miss, neglect, nonpayment, offense, omission, overlooking, oversight, privation, shortcoming, slight, transgression, vice, weakness, wrongdoing |
| Antonyms: | advantage, payment, perfection, satisfaction, success |
| Main Entry: | deficiency |
| Part of Speech: | noun |
| Definition: | imperfection, inadequacy |
| Synonyms: | absence, bug*, dearth, defalcation, default, defect, deficit, demerit, dereliction, failing, failure, fault, flaw, frailty, glitch*, inability to hack it, insufficience, insufficiency, lack, loss, need, neglect, paucity, privation, scantiness, scarcity, shortage, shortcoming, sin, want, weakness |
| Antonyms: | adequacy, enough, faultlessness, perfection, plenty, satisfaction, sufficiency, superfluity |
| Main Entry: | deficit |
| Part of Speech: | noun |
| Definition: | shortage of something needed, required |
| Synonyms: | arrears, dead horse, defalcation, default, deficiency, due bill, dues, in hock, in the hole, in the red, inadequacy, insufficience, insufficiency, lack, loss, paucity, red ink, scantiness, shortcoming, shortfall, underage |
| Antonyms: | enough, excess, plenty, superfluousness |
| Main Entry: | disproportion |
| Part of Speech: | noun |
| Definition: | imbalance |
| Synonyms: | asymmetry, difference, discrepancy, disparity, imparity, inadequacy, inequality, insufficiency, irregularity, lopsidedness, unevenness, unsuitableness |
| Antonyms: | balance, equality, evenness, parity, proportion |
| Main Entry: | drought |
| Part of Speech: | noun |
| Definition: | dryness; shortage of supply |
| Synonyms: | aridity, dearth, deficiency, dehydration, desiccation, dry spell, insufficiency, lack, need, parchedness, rainlessness, scarcity, want |
| Antonyms: | monsoon, wetness |
| Main Entry: | feebleness |
| Part of Speech: | noun |
| Definition: | lack of strength; ineffectiveness |
| Synonyms: | debility, decrepitude, delicacy, disease, effeteness, enervation, etiolation, exhaustion, flimsiness, frailness, frailty, inability, inadequacy, incapacity, incompetence, ineffectualness, infirmity, infirmness, insignificance, insufficiency, lameness, languor, lassitude, malaise, senility, sickliness, unhealthiness, weakness |
| Antonyms: | ability, effectiveness, health, heartiness, power, soundness, strength |
| Main Entry: | imperfection |
| Part of Speech: | noun |
| Definition: | flaw |
| Synonyms: | blemish, bug*, catch, defect, deficiency, deformity, demerit, disfigurement, failing, fallibility, fault, foible, frailty, glitch*, gremlin, inadequacy, incompleteness, infirmity, insufficiency, peccadillo, problem, shortcoming, sin, stain, taint, weak point, weakness |
| Antonyms: | excellence, flawlessness, perfection, purity |