Noun

• S: (n) strengthening (strengthening%1:11:00::) (becoming stronger)
• S: (n) strengthening (strengthening%1:04:00::) (the act of increasing the strength of something)

Verb

• S: (v) strengthen (strengthen%2:30:01::), beef up (beef_up%2:30:00::), fortify (fortify%2:30:01::) (make strong or stronger) "This exercise will strengthen your upper body"; "strengthen the relations between the two countries"
• S: (v) strengthen (strengthen%2:30:00::) (gain strength) "His body strengthened"
• direct troponym / full troponym
• direct hypernym / inherited hypernym / sister term
• antonym
• derivationally related form
• sentence frame
• S: (v) tone (tone%2:29:00::), tone up (tone_up%2:29:00::), strengthen (strengthen%2:29:00::) (give a healthy elasticity to) "Let's tone our muscles"