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Synonyms

insufficient

American  
[in-suh-fish-uhnt] / ˌɪn səˈfɪʃ ənt /

adjective

  1. not sufficient; lacking in what is necessary or required.

    an insufficient answer.

    Synonyms:
    deficient, scanty, inadequate
  2. deficient in force, quality, or amount; inadequate.

    insufficient protection.


insufficient British  
/ ˌɪnsəˈfɪʃənt /

adjective

  1. not sufficient; inadequate or deficient

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • insufficiently adverb

Etymology

Origin of insufficient

First recorded in 1350–1400; Middle English, from Late Latin insufficient-, stem of insufficiēns; equivalent to in- 3 + sufficient

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

The electric company also filed suit against six water agencies, including Pasadena Water & Power, claiming there were insufficient water supplies available for firefighters.

From Los Angeles Times

The regulator said the application had insufficient information on the proposed combined company’s projected market share and lacked other necessary documents.

From The Wall Street Journal

President Zelensky has called Ukraine's air defence supplies "insufficient", having revealed several systems were "without missiles" until Friday morning.

From BBC

Its board chairman said Paramount’s bid provides “insufficient value” and relies on “an extraordinary amount of debt financing.”

From The Wall Street Journal

Even Meta’s substantial operational cash flows—over $100 billion in the past 12 months—will be insufficient to fund the efforts.

From Barron's