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[kuh n-vins] /kənˈvɪns/
verb (used with object), convinced, convincing.
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 forms
convincedly, adverb
convincedness, noun
convincer, noun
convincible, adjective
convincibility, noun
half-convinced, adjective
preconvince, verb (used with object), preconvinced, preconvincing.
quasi-convinced, adjective
reconvince, verb (used with object), reconvinced, reconvincing.
unconvinced, adjective
unconvincible, adjective
well-convinced, adjective
1. satisfy.
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 Dictionary, © Random House, Inc. 2018.
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Examples from the Web for half-convinced
Historical Examples
  • 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
  • Already he was more than half-convinced that he should write to Sloan and reject his kindly offer of support.

    The Plunderer Roy Norton
  • No, it sounded as if he had at least half-convinced himself, while the others showed they were lying outright.

  • Corporal Nixon pondered a little, because half-convinced, but would not acknowledge that he could have been mistaken.

    Hardscrabble John Richardson
  • Brookings, caught in his duplicity and half-convinced of the truth of DuQuesne's statements, still temporized.

    The Skylark of Space

    Edward Elmer Smith and Lee Hawkins Garby
  • Nancy was only half-convinced, but the easiest thing was to accept Sally May's explanation.

    Judy of York Hill

    Ethel Hume Patterson Bennett
British Dictionary definitions for half-convinced


not entirely convinced


verb (transitive)
(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 Forms
convincement, noun
convincer, noun
convincible, adjective
Usage note
The use of convince to talk about persuading someone to do something is considered by many British speakers to be wrong or unacceptable
Word Origin
C16: from Latin convincere to demonstrate incontrovertibly, from com- (intensive) + vincere to overcome, conquer
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
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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
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