reinforce

verb
re·​in·​force | \ ˌrē-ən-ˈfȯrs How to pronounce reinforce (audio) \
variants: or less commonly

Definition of reinforce

transitive verb

1 : to strengthen by additional assistance, material, or support : make stronger or more pronounced reinforce levees reinforce the elbows of a jacket reinforce ideas
2 : to strengthen or increase by fresh additions reinforce our troops were reinforcing their pitching staff
3 : to stimulate (a subject, such as an experimental animal) by reinforcement (see reinforcement sense 3) also : to encourage (a response) by reinforcement

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Other Words from reinforce

reinforceable \ ˌrē-​ən-​ˈfȯr-​sə-​bəl How to pronounce reinforceable (audio) \ adjective

Examples of reinforce in a Sentence

The captain sent out another squad to reinforce the troops. Our camp is reinforced with supplies flown in by helicopter. The levees will need to be reinforced. The bad weather forecast only reinforces our decision to leave early tomorrow. Some critics say that the movie reinforces negative stereotypes about the military. We do our best to reinforce good conduct in the classroom.
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Recent Examples on the Web

Democratic presidential candidate Beto O'Rourke reinforced the president's argument at this week's debate. Ben Tracy, CBS News, "Trump expected to announce gun control legislation this week. But the substance of it is a mystery," 14 Sep. 2019 The report reinforced many of findings of a recent report by Dr. Anton Nigusse Bland, the city’s director of mental health reform. Trisha Thadani, SFChronicle.com, "Nonprofit ponies up $3 million to get those in crisis off SF’s streets and into temporary beds," 12 Sep. 2019 Nothing reinforced that divide more than the Sept. 1 trade of Mack. Jenny Vrentas And Greg Bishop, SI.com, "The Raiders Are Jon Gruden’s Show Now," 6 Sep. 2019 When the doctors set up interviews with Kaplan and Holmes and their sickest patients, the conversations only reinforced the investigators’ skepticism. Mike Mariani, The New Yorker, "A Town for People with Chronic Fatigue," 3 Sep. 2019 The comments from Ali Rabiei reinforced the Friday deadline Iran had set for Europe to offer it a way to sell its crude oil on the global market. Washington Post, "Iran warns of ‘strong step’ from atomic deal if no new terms," 3 Sep. 2019 The comments from Ali Rabiei reinforced the deadline Iran had set for Friday for Europe to offer it a way to sell its crude oil on the global market. Fox News, "Tehran will 'take a strong step' away from nuclear deal if Europe doesn't offer new terms, Iran says," 2 Sep. 2019 Chris Cuomo’s pugilistic outburst earlier this week reinforced the usual tropes about Italian Americans. Joseph Loconte, National Review, "An Insider’s Guide to Italian Insults," 16 Aug. 2019 Kruse’s analysis also reinforced some curious trends seen in previous Kepler data. Jonathan O'callaghan, Scientific American, "One Search to (Almost) Rule Them All: Hundreds of Hidden Planets Found in Kepler Data," 2 Aug. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'reinforce.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

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First Known Use of reinforce

15th century, in the meaning defined at transitive sense 1

History and Etymology for reinforce

re- + inforce, alteration of enforce

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Statistics for reinforce

Last Updated

20 Oct 2019

Look-up Popularity

Time Traveler for reinforce

The first known use of reinforce was in the 15th century

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More Definitions for reinforce

reinforce

verb

English Language Learners Definition of reinforce

: to strengthen (a group of people) with new supplies or more people
: to strengthen (something, such as clothing or a building) by adding more material for support
: to encourage or give support to (an idea, behavior, feeling, etc.)

reinforce

verb
re·​in·​force | \ ˌrē-ən-ˈfȯrs\
reinforced; reinforcing

Kids Definition of reinforce

1 : to strengthen with new supplies or more people Another squad reinforced the troops.
2 : to strengthen by adding more material for support The wall needs to be reinforced.

reinforce

transitive verb
re·​in·​force | \ ˌrē-ən-ˈfō(ə)rs, -ˈfȯ(ə)rs How to pronounce reinforce (audio) \
reinforced; reinforcing

Medical Definition of reinforce

1 : to strengthen by additional material or support : make stronger reinforced with vitamins
2 : to stimulate (as an experimental animal or a student) by reinforcement also : to encourage (a response) by reinforcement

Other Words from reinforce

reinforceable \ -​ə-​bəl How to pronounce reinforceable (audio) \ adjective

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Comments on reinforce

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