Synonyms of lengthen in English:

lengthen


See definition of lengthen

verb

1‘he followed her, lengthening his stride to keep up’

SYNONYMS

elongate, make longer, stretch out, extend

expand, widen, broaden, enlarge

ANTONYMS

shorten

2‘they flower in the spring when the days are lengthening’

SYNONYMS

grow longer, get longer, draw out, stretch

ANTONYMS

contract, decrease

3‘you'll need to lengthen the cooking time’

SYNONYMS

prolong, make longer, increase, extend, expand, protract, stretch out, draw out, drag out, spin out

ANTONYMS

curtail, truncate