Definitions from Wiktionary (deficient)

▸ adjective:  Lacking something essential; often construed with in.
▸ adjective:  Insufficient or inadequate in amount.
▸ adjective:  (mathematics) Of a number n, Having the sum of divisors σ(n)<2n, or, equivalently, the sum of proper divisors (or aliquot sum) s(n) ▸ noun:  A person who is deficient.

Similar:

lacking, insufficient, poor, inadequate, scarce, wanting, low, shy, nonstandard, scant, more...

Opposite:

abundant, sufficient, ample, plentiful, replete

Types:

anemic, malnourished, underweight, starved, more...

Phrases:

mentally deficient, deficient diet, deficient number, cell-wall deficient bacteria, cell wall deficient bacteria, more...

Adjectives:

little, singularly, mental, more, rank, zinc, immune, nutrient, immunologically, patient, lactase

Colors:

    gray,     beige,     dull brown,     pale yellow,     faded green, more...

---

▸ Word origin

▸ Words similar to Deficient

▸ Usage examples for Deficient

▸ Idioms related to Deficient

▸ Wikipedia articles (New!)

▸ Popular adjectives describing Deficient

▸ Popular nouns described by Deficient

▸ Words that often appear near Deficient

▸ Rhymes of Deficient

▸ Invented words related to Deficient