reenforce

US: (rē′ən fôrs′, -fōrs′)

WordReference Random House Unabridged Dictionary of American English © 2025

re•en•force  (rē′ən fôrs′, -fōrs′), v.t., -forced, -forc•ing, n. 

1. reinforce.

Also, re′-en•force′. 

WordReference Random House Learner's Dictionary of American English © 2025

re•in•force or re•en•force /ˌriɪnˈfɔrs/   v. [~ + object] , -forced, -forc•ing. 

1. to strengthen with some added piece, support, or material:
   to reinforce a wall.
2. to make more forceful or effective;
   strengthen;
   support:
   to reinforce the law.
3. to strengthen (a military force) with additional soldiers, ships, aircraft, etc.
4. Psychology Psychol. to strengthen the likelihood of (a desired way of behaving) by giving or withholding a reward.

See -fort-.

WordReference Random House Unabridged Dictionary of American English © 2025

re•in•force  (rē′in fôrs′, -fōrs′), v., -forced, -forc•ing, n. 
v.t. 

1. to strengthen with some added piece, support, or material:
   to reinforce a wall.
2. to strengthen (a military force) with additional personnel, ships, or aircraft:
   to reinforce a garrison.
3. to strengthen;
   make more forcible or effective:
   to reinforce efforts.
4. to augment;
   increase:
   to reinforce a supply.
5. Psychology to strengthen the probability of (a response to a given stimulus) by giving or withholding a reward.

n. 

6. something that reinforces.
7. a metal band on the rear part of the bore of a gun, where the explosion occurs.

Also, reenforce, re-enforce. 

• re- + inforce, alteration of enforce 1590–1600

re′in•forc′er, n.