Synonyms of old hat in English:

old hat


See definition of old hat

phrase

1‘something that is exceedingly popular today is usually old hat by tomorrow’

SYNONYMS
out of date, outdated, dated, old-fashioned, out, out of fashion, outmoded, unfashionable, last year's, frumpish, frumpy, out of style, outworn, old, old-time, old-world, behind the times, archaic, obsolescent, obsolete, ancient, antiquated, superannuated, defunct
medieval, prehistoric, antediluvian, old-fogeyish, old-fangled, conservative, backward-looking, quaint, anachronistic, crusted, feudal, fusty, moth-eaten, olde worlde
passé, démodé, vieux jeu
informal square, not with it, out of the ark, creaky, clunky, mouldy
Northern English informal antwacky
North American informal horse-and-buggy, rinky-dink, mossy
archaic square-toed
ANTONYMS

modern, up to date, fashionable