Synonyms of flaccid in English:

flaccid


See US English definition of flaccid

See UK English definition of flaccid

See Spanish definition of fláccido

adjective

1‘your muscles are sagging, they're flaccid’

SYNONYMS
soft, loose, flabby, unfirm, yielding, slack, lax, out of tone, toneless
drooping, droopy, sagging, saggy, pendulous, limp, floppy, wilting
ANTONYMS

firm, taut

2‘his play seemed flaccid and lifeless’

SYNONYMS
lacklustre, ineffective, ineffectual, lifeless, listless, muted, spiritless, lustreless, uninspiring, apathetic, unanimated, tame
worthless, futile, fruitless
ANTONYMS

spirited