reinforce
verb
re·in·force
ˌrē-ən-ˈfȯrs 
variants
or less commonly reenforce
reinforced also reenforced; reinforcing also reenforcing; reinforces also reenforces
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
: to seek or get reinforcements
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.
Recent Examples on the Web
When financial literacy and empowerment are neglected, wealth-building opportunities slip through the cracks, reinforcing the cycle of instability.
—
Shay Levister, Forbes.com, 13 May 2025
Rising protectionism fueled by a populist backlash to globalization, a post-pandemic push for economic security reinforced by the shock of Russia’s invasion of Ukraine, and, above all, intensifying U.S.-Chinese strategic rivalry converged to shatter the illusion of a global tech ecosystem.
—Ian Bremmer, Foreign Affairs, 13 May 2025
Instead, the nourishing mousse floods your locks with hyaluronic acid and keratin, to reinforce strand strength and give you some serious volume and body.
—Justin Fenner, Robb Report, 12 May 2025
Trump signed an executive order on April 28 reinforcing a federal law that requires commercial truck drivers to be proficient in English.
—Juan Carlos Chavez, The Orlando Sentinel, 12 May 2025
See All Example Sentences for reinforce
Examples are automatically compiled from online sources to
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Opinions expressed in the examples do not represent those of Merriam-Webster or its editors.
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Shay Levister, Forbes.com, 13 May 2025
Rising protectionism fueled by a populist backlash to globalization, a post-pandemic push for economic security reinforced by the shock of Russia’s invasion of Ukraine, and, above all, intensifying U.S.-Chinese strategic rivalry converged to shatter the illusion of a global tech ecosystem.
—Ian Bremmer, Foreign Affairs, 13 May 2025
Instead, the nourishing mousse floods your locks with hyaluronic acid and keratin, to reinforce strand strength and give you some serious volume and body.
—Justin Fenner, Robb Report, 12 May 2025
Trump signed an executive order on April 28 reinforcing a federal law that requires commercial truck drivers to be proficient in English.
—Juan Carlos Chavez, The Orlando Sentinel, 12 May 2025
See All Example Sentences for reinforce
Cite this Entry
“Reinforce.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/reinforce. Accessed 28 May. 2025.
Copy CitationKids Definition
reinforce
verb
re·in·force
ˌrē-ən-ˈfō(ə)rs
-ˈfȯ(ə)rs
1
: to strengthen by additional assistance, material, or support
reinforce the elbows of a jacket
reinforce the argument with facts
2
: to strengthen or increase by fresh additions
were reinforcing their pitching staff
reinforce our troops
3
: to stimulate (a person or animal) with a reinforcer
also
: to increase the frequency of (a response) with a reinforcer
Medical Definition
reinforce
transitive verb
re·in·force
ˌrē-ən-ˈfō(ə)rs, -ˈfȯ(ə)rs
reinforced; reinforcing
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
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