1. make stronger

- he reinforced the concrete

Similar word(s): reenforce

Definition categories: change, fortify, strengthen

2. strengthen and support with rewards

- Let's reinforce good behavior

Similar word(s): reward

Definition categories: communication, instruct, learn, teach

Sentences with reinforce as a verb:

- He reinforced the handle with a metal rod and a bit of tape.

- The right homework will reinforce and complement the lesson!

- Advertising for fast food can reinforce unhealthy dietary tendencies.