1. strengthen - verb
· make strong or stronger; "This exercise will strengthen your upper body"; "strengthen the relations between the two countries"
Hypernym(s): change, alter, modify
Antonym(s): weaken
2. strengthen - verb
· gain strength; "His body strengthened"
Hypernym(s): change
Antonym(s): weaken
3. strengthen - verb
· give a healthy elasticity to; "Let's tone our muscles"
Hypernym(s): exercise, work_out
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