Synonyms of strengthen in English:

strengthen


See definition of strengthen

verb

1‘calcium helps strengthen growing bones’

SYNONYMS
make strong, make stronger, build up, give strength to, make healthy, nourish
ANTONYMS

weaken

2‘engineers strengthened the walls’

SYNONYMS
reinforce, make stronger, buttress, brace, shore up, underpin
rare underprop

3‘strengthened glass’

SYNONYMS
toughen, temper, anneal

4‘the wind had strengthened’

SYNONYMS
become strong, become stronger, gain strength, intensify, pick up, heighten
ANTONYMS

die down, ease off

5‘his insistence strengthened her determination’

SYNONYMS
fortify, bolster, make stronger, give strength to, give a boost to, boost, reinforce, harden, stiffen, toughen, steel, cement
increase, add to, fuel, add fuel to
renew, vitalize, give new energy to, buoy up, hearten
ANTONYMS

sap, weaken

6‘the organization strengthened its efforts to expand such programmes’

SYNONYMS
step up, increase, heighten, escalate, scale up
informal up, crank up, beef up
ANTONYMS

relax, decrease

7‘the argument is strengthened by evidence from clinical data’

SYNONYMS
reinforce, make more forceful, lend more weight to
support, back up, bolster, confirm, bear out, substantiate, corroborate, authenticate
consolidate
ANTONYMS

undermine