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strengthen
Verbstrengthen has 3 senses
strengthen, beef up, fortify - make strong or stronger; "This exercise will strengthen your upper body"; "strenghten the relations between the two countries" --1is one way tochange, alter, modify Antonyms:weaken
tone, tone up, strengthen - give a healthy elasticity to; "Let's tone our muscles" --3is one way toexercise, work out Sample sentence: Somebody ----s something