transitive verb reinforced -·forced′, reinforcing -·forc′·ing

1. to strengthen (a military, naval, or air force) with additional troops, ships, planes, etc.
2. to increase the number or amount of
3. to strengthen or make stronger, as by patching, propping, adding new material, etc.
4. to make stronger or more compelling to reinforce one's arguments
5. Psychol. to increase the probability of (a response to a stimulus) by giving a reward or ending a painful stimulus

Etymology: re- + inforce, var. of enforce