Adjective strengthening has 1 sense
  1. fortifying, strengthening - invigorating physically or mentally
    Antonym: debilitating (indirect, via invigorating)
,Noun strengthening has 2 senses
  1. strengthening - becoming stronger
    --1 is a kind of
    transformation, transmutation, shift
    Antonyms: weakening
    Derived form: verb strengthen2
  2. strengthening - the act of increasing the strength of something
    --2 is a kind of
    increase, step-up
    Antonyms: weakening
    --2 has particulars: concentration
    Derived form: verb strengthen1
,Verb strengthen has 3 senses
  1. strengthen, beef up, fortify - make strong or stronger; "This exercise will strengthen your upper body"; "strenghten the relations between the two countries"
    --1 is one way to change, alter, modify
    Antonyms: weaken
    Derived forms: noun strengthener1, noun strengthening2
    Sample sentences:
    Somebody ----s something
    Somebody ----s somebody
    Something ----s somebody
    Something ----s something
  2. strengthen - gain strength; "His body strengthened"
    --2 is one way to
    change
    Antonyms: weaken
    Derived form: noun strengthening1
    Sample sentences:
    Something ----s
    Somebody ----s
  3. tone, tone up, strengthen - give a healthy elasticity to; "Let's tone our muscles"
    --3 is one way to exercise, work out
    Sample sentence:
    Somebody ----s something
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