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strength·en

strengthen

pronunciation:
strengk thn [or] streng thn [or] stren thn
part of speech: transitive verb & intransitive verb
inflections: strengthened, strengthening, strengthens
definition: to make or grow strong or stronger.
These exercises will help you strengthen those muscles.His will to succeed strengthened each day.
 
synonyms:
confirm, fortify, heighten, intensify, nourish, reinforce, substantiate
antonyms:
atrophy, attenuate, decrease, demolish, devitalize, dilute, diminish, enfeeble, shake, undermine, weaken
similar words:
arm, brace, build, buttress, consolidate, develop, feed, stay
derivation: strengthener (n.)