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See more synonyms for all-important on Thesaurus.com
  1. extremely or vitally important; essential.
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Origin of all-important

First recorded in 1830–40
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Related Words for all-important

unavoidable, mandatory, fundamental, urgent, indispensable, required, crucial, needed, vital, imperative, significant, basic, paramount, decisive, dire, integral, precarious, strategic, pivotal, dangerous

Examples from the Web for all-important

Contemporary Examples of all-important

Historical Examples of all-important

  • We should have the keys of the door that led to the all-important rooms.

  • Nor was Cleo unprepared in the all-important question of the play itself.

    Cleo The Magnificent

    Louis Zangwill

  • Now it is all-important that the beginning of everything should be according to nature.



  • The development of this interest and appreciation is the all-important object.

    College Teaching

    Paul Klapper

  • The spirit and method of attack is all-important; quantity is secondary.

British Dictionary definitions for all-important


  1. crucial; vital
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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