verb (used with object), as·sev·er·at·ed, as·sev·er·at·ing.

to declare earnestly or solemnly; affirm positively; aver.

Origin of asseverate

1785–95; < Latin assevērātus spoken in earnest (past participle of assevērāre), equivalent to as- as- + sevēr- (see severe) + -ātus -ate1

Synonyms for asseverate Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Related Words for asseverate

aver, avow

Examples from the Web for asseverate

Historical Examples of asseverate

  • She did not asseverate any more, nor even say she was innocent.

  • No one appeared to think it worth while to asseverate the fact, for it was self-evident.

    Black Ivory

    R.M. Ballantyne

  • He could asseverate with some justice, "I have never written an insincere note."

    Musical Portraits

    Paul Rosenfeld

  • They lacked a definite opinion to entertain and a cry to asseverate.

  • It has more solemnity than declare, and more composure and dignity than asseverate, which is to assert excitedly.

    English Synonyms and Antonyms

    James Champlin Fernald

British Dictionary definitions for asseverate



(tr) to assert or declare emphatically or solemnly
Derived Formsasseveration, noun

Word Origin for asseverate

C18: from Latin assevērāre to do (something) earnestly, from sevērus severe
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 asseverate

1791, from Latin asseveratus, past participle of asseverare "to affirm, insist on, maintain," from ad- "to" (see ad-) + severus "serious, severe" (see severe). Related: Asseverated; asseverating.

Online Etymology Dictionary, © 2010 Douglas Harper