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Definitions

reinforce

[ree-in-fawrs, -fohrs] / ˌri ɪnˈfɔrs, -ˈfoʊrs /
VERB
strengthen, augment
Synonyms
STRONGEST
add to bolster boost build up buttress emphasize enlarge fortify increase shore up stress support underline
STRONG
carry energize harden hype multiply prop stiffen stroke supplement sustain toughen
WEAK
add fuel to fire back up beef up heat up lend a hand pick up pillar prop up punch up soup up stand up for
Antonyms
STRONGEST
decrease diminish discourage hinder hurt lessen let down play down prevent reduce undermine weaken
STRONG
liquefy melt soften
WEAK
subtract take away

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Troops had also been deployed to hunt the insurgents and reinforce security.

From BBC • Apr. 6, 2026

Bird designed tools to help the kids budget, and holds weekly money meetings to check in and reinforce the ideas she hopes her children, now 11, 9 and 8 years old, will internalize.

From MarketWatch • Apr. 4, 2026

WeRide is likely to reinforce its first-mover advantages, such as level 4 autonomous driving technology, strong unit economics, and deep engagement with industry regulators, they say.

From The Wall Street Journal • Apr. 1, 2026

In these systems, the scrolls could both reinforce materials and improve conductivity.

From Science Daily • Mar. 31, 2026

His voice, correspondingly, had lowered and become gravelly, so that his jaw, which had always jutted, now seemed to reinforce an impression of firmness and purpose.

From "Typical American" by Gish Jen

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.