verb (used with object), con·vinced, con·vinc·ing.

to move by argument or evidence to belief, agreement, consent, or a course of action: to convince a jury of his guilt; A test drive will convince you that this car handles well.
to persuade; cajole: We finally convinced them to have dinner with us.
Obsolete. to prove or find guilty.
Obsolete. to overcome; vanquish.

Origin of convince

1520–30; < Latin convincere to prove (something) false or true, (somebody) right or wrong, equivalent to con- con- + vincere to overcome; see victor
Related formscon·vinc·ed·ly, adverbcon·vinc·ed·ness, nouncon·vinc·er, nouncon·vin·ci·ble, adjectivecon·vinc·i·bil·i·ty, nounhalf-con·vinced, adjectivepre·con·vince, verb (used with object), pre·con·vinced, pre·con·vinc·ing.qua·si-con·vinced, adjectivere·con·vince, verb (used with object), re·con·vinced, re·con·vinc·ing.un·con·vinced, adjectiveun·con·vin·ci·ble, adjectivewell-con·vinced, adjective

Synonyms for convince

Usage note

Convince, an often stated rule says, may be followed only by that or of, never by to: We convinced him that he should enter (not convinced him to enter ) the contest. He was convinced of the wisdom of entering. In examples to support the rule, convince is often contrasted with persuade, which may take to, of, or that followed by the appropriate construction: We persuaded him to seek counseling (or of his need for counseling or that he should seek counseling ). The history of usage does not support the rule. Convince (someone) to has been in use since the 16th century and, despite objections by some, occurs freely today in all varieties of speech and writing and is fully standard: Members of the cabinet are trying to convince the prime minister not to resign. Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for half-convinced

Historical Examples of half-convinced

  • Acting on this hypothesis, of which he was now half-convinced, Stern nodded.

    Darkness and Dawn

    George Allan England

  • And finding me in the house I'd described, where I'd said it was, had him half-convinced.

    Exile from Space

    Judith Merril

  • Bergson seems always to have been more than half-convinced of the truth of spiritualism.

    The Last Harvest

    John Burroughs

  • The warrior gazed about him grimly, and like one but half-convinced.

    The Wept of Wish-Ton-Wish

    James Fenimore Cooper

  • "This is a very strange proceeding," began he, half-convinced of her sincerity.

    Castle Craneycrow

    George Barr McCutcheon

British Dictionary definitions for half-convinced



not entirely convinced


verb (tr)

(may take a clause as object) to make (someone) agree, understand, or realize the truth or validity of something; persuade
mainly US to persuade (someone) to do something
  1. to overcome
  2. to prove guilty
Derived Formsconvincement, nounconvincer, nounconvincible, adjective

Word Origin for convince

C16: from Latin convincere to demonstrate incontrovertibly, from com- (intensive) + vincere to overcome, conquer


The use of convince to talk about persuading someone to do something is considered by many British speakers to be wrong or unacceptable
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 half-convinced



1520s, "to overcome in argument," from Latin convincere "to overcome decisively," from com-, intensive prefix (see com-), + vincere "to conquer" (see victor). Meaning "to firmly persuade" is from c.1600. Related: Convinced; convincing; convincingly.

Online Etymology Dictionary, © 2010 Douglas Harper