EN

Synonyms for insufficient

Most common

inadequate deficient poor lacking

All synonyms

Adjective

1. Inadequate — not sufficient; of a type or kind that does not suffice, that does not satisfy requirements or needs

inadequate, deficient, poor, lacking, unsatisfactory, scant, ineffective, scanty, scarce, short, defective, sparse, incompetent, ineffectual, skimpy, thin, sorry, lean, slender, lank, shy informal, unsufficient

Definitions

  1. adj. 1

    Not sufficient; of a type or kind that does not suffice, that does not satisfy requirements or needs.

    It is a necessary condition but an insufficient one.

Example sentences

  • lacking The service is slow because they're lacking staff.
  • inadequate At times like this, words are woefully inadequate.
  • deficient English is a very deficient language in this area.
  • unsatisfactory Enrico’s performance in the army is unsatisfactory.
  • unequal South Africa is the most unequal nation on Earth.

Popularity over time

Word1850 → 2019Trend
insufficientfalling
lackingsteady
inadequatefalling
deficientfalling
unsatisfactoryfalling
unequalsteady

Use in printed books, per decade from 1850 to 2019.

By length

3 letters
shy1
4 letters
poor1, thin1, lean1, lank1
5 letters
short1, sorry2, scant1
6 letters
scarce1, sparse1, skimpy2, scanty2
7 letters
lacking2, slender2, unequal3
9 letters
defective3, deficient3
10 letters
inadequate4
11 letters
ineffective4, incompetent4, ineffectual5
12 letters
unsufficient
14 letters
unsatisfactory6, incommensurate

The small number after each word is its number of syllables (sorry2 = 2 syllables).