Antonyms
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1. backstop

verb. ['ˈbækˌstɑːp'] act as a backstop.

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2. backstop

noun. ['ˈbækˌstɑːp'] a precaution in case of an emergency.

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4. backstop

noun. ['ˈbækˌstɑːp'] (baseball) the person who plays the position of catcher.

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