Synonyms of flatten in English:

flatten


See US English definition of flatten

See UK English definition of flatten

See Spanish definition of aplanar

verb

1‘Tom flattened the crumpled paper’

SYNONYMS
become flat, make flat, become even, make even, become smooth, make smooth, smooth, smooth off, smooth out, level, level off, level out, even out
iron, steamroller
ANTONYMS

roughen, make uneven

2‘he had trampled around and flattened the grass’

SYNONYMS
compress, press down, crush, squash, compact
trample, tread, tramp, wear

3‘tornadoes can flatten buildings in seconds’

SYNONYMS
demolish, raze, raze to the ground, level, tear down, knock down, destroy, wipe out, topple, wreck, reduce to ruins, devastate, annihilate, pulverize, obliterate, ravage, smash, wipe off the face of the earth, wipe off the map
North American informal total
rare unbuild

4‘Flynn flattened him with a single punch’

SYNONYMS
knock down, knock over, knock to the ground, knock off one's feet, fell, rugby-tackle, topple, prostrate
informal lay out, floor, deck, knock for six, knock into the middle of next week

5‘I flattened a drunken heckler with a couple of speedy put-downs’

SYNONYMS
humiliate, crush, quash, squash, deflate, subdue, humble, cow, chasten, bring down, bring low, take down a peg or two, mortify
informal put down, floor, cut down to size, put someone in their place, settle someone's hash
US informal own