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Synonym for back up [verb]

The synonym back up synonymous definition words:
means "strengthen"
consolidate, brace, buttress, fortify, stiffen, prop, steady
Further results for the word "back up"

brace [verb]

means "strengthen"
consolidate, back up, buttress, fortify, stiffen, prop

strengthen [verb]

means "substantiate"
back up, bolster, confirm, authenticate, corroborate, validate

understudy [noun]

means "student"
substitute, pupil, alternate, back-up, fill-in, stand-in

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