Synonyms of multiply in English:

multiply


See definition of multiply

verb

1‘the difficulties seem to be multiplying by the minute’

SYNONYMS
increase, increase exponentially, grow, become more numerous, accumulate, proliferate, mount up, mushroom, snowball, burgeon, spread, expand
literary wax
ANTONYMS

decrease, diminish

2‘rabbits were introduced here and multiplied’

SYNONYMS
breed, reproduce, procreate, propagate