continuing without interruption; ceaseless; unending: an incessant noise.

Origin of incessant

1425–75; late Middle English incessaunte < Late Latin incessant-, equivalent to Latin in- in-3 + cessant- (stem of cessāns), present participle of cessāre to stop work; see cease, -ant
Related formsin·ces·san·cy, in·ces·sant·ness, nounin·ces·sant·ly, adverb

Synonyms for incessant

Antonyms for incessant Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for incessancy

Historical Examples of incessancy

  • Couple with this incessancy of action the loftiness and ardour of his aspirations.


    Clement Bailhache

  • But now fatigue a little deadened him to that incessancy of life, it seemed now just an eternal circling.

    The World Set Free

    Herbert George Wells

  • The air was tense and restless with murmured prayer and the incessancy of "sacring-bells."

  • In recapitulating the history of Uruguay at this period the incessancy of the stream of warlike events is amazing.


    W. H. Koebel

British Dictionary definitions for incessancy



not ceasing; continual
Derived Formsincessancy or incessantness, nounincessantly, adverb

Word Origin for incessant

C16: from Late Latin incessāns, from Latin in- 1 + cessāre to cease
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

Word Origin and History for incessancy

1610s; see incessant + -cy.



mid-15c., from Old French incessant (mid-14c.), from Late Latin incessantem (nominative incessans) "unceasing," from Latin in- "not" (see in- (1)) + cessantem (nominative cessans), present participle of cessare "cease" (see cease). Related: Incessantly (early 15c.).

Online Etymology Dictionary, © 2010 Douglas Harper