reinforce vb
1 to give added strength or support to
2 to give added emphasis to; stress, support, or increase
his rudeness reinforced my determination
3 to give added support to (a military force) by providing more men, supplies, etc.
4 (Psychol) to reward an action or response of (a human or animal) so that it becomes more likely to occur again
(C17: from obsolete renforce, from French renforcer; see re- + inforce enforce)
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reinforcement n