re·in·force also re-en·force or re·en·force (rē′ĭn-fôrs)
tr.v. re·in·forced, re·in·forc·ing, re·in·forc·es also re-en·forced or re-en·forc·ing or re-en·forc·es or re·en·forced or re·en·forc·ing or re·en·forc·es
1. To give more force or effectiveness to; strengthen: The news reinforced her hopes.
2. To strengthen (a military force) with additional personnel or equipment.
3. To strengthen by adding extra support or material.
4. To increase the number or amount of; augment.
a. To reward (an experimental subject, for example) with a reinforcer subsequent to a desired response or performance.
b. To encourage (a response) by means of a reinforcer.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.