1 | noun | the state of needing something that is absent or unavailable 2 | noun | lack of an adequate quantity or number

duhf'ishuhnsee (IPA: dəfˈɪʃənsi)

de-fi-cien-cy (10 letters | 4 syllables)

deficiencies

lack | want | inadequacy | insufficiency

absence | dearth | deficit | famine | mineral deficiency | shortage | shortness | stringency | tightness | exiguity | leanness | meagerness | meagreness | poorness | scantiness | ... (total: 20)

demand | need | amount

efficiency | immunodeficiency | inefficiency | proficiency | sufficiency (total: 5) (based on typical American pronunciation)

inefficiency

(none among common words)

acquired immune deficiency syndrome | color vision deficiency | colour vision deficiency | deficiency disease | iron deficiency anaemia | iron deficiency anemia | lactase deficiency | mass deficiency | mental deficiency | vitamin-deficiency diet | zinc deficiency (total: 11)

Mandarin Chinese: | 缺點 (noun) | 缺乏 (noun) Hindi: | त्रुटि (noun) | अभाव (noun) Arabic: | قُصور (noun) | نَقص (noun) Spanish: | laguna (knowledge) | deficiencia (quantity) | carencia (quantity) | falta (lack) | carencia (lack) French: | lacune (knowledge) | carence (quantity) | manque (quantity) | manque (lack) | défaut (lack)

deficiency.com | deficiency.net | deficiency.org | deficiency.info | deficiency.biz (total: 5)

Shortfall (based on all New York Times crossword puzzles 1994 to 2009)

21 (International English) | 21 (North American English)