reinforce is on the Academic Word List.

Pronunciation

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Plain form
reinforce

Third-person singular
reinforces

Past tense
reinforced

Past participle
reinforced

Present participle
reinforcing

  1. (transitive) If you reinforce something, you make it stronger.
    Recent mistakes only reinforce the view that nobody cares.
    Hitting a child can reinforce his tendency to use violence.
    This meeting has helped to further reinforce the links between the colleges.
    The steel is used to reinforce the building's walls.
    The extra men will reinforce the army in Iraq.
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