Synonyms of lightweight in English:

lightweight


See US English definition of lightweight

See UK English definition of lightweight

See Spanish definition of ligero

adjective

1‘a comfortable lightweight jacket’

SYNONYMS
thin, light, flimsy, insubstantial
summery
feathery, airy, delicate, fine, floaty, gauzy, sheer, gossamer, diaphanous, transparent, translucent, see-through
ANTONYMS

heavy, thick

2‘snobs will dismiss the show as lightweight, contrived pap’

SYNONYMS
trivial, insubstantial, trifling, frothy, superficial, shallow, unintellectual, undemanding, frivolous, insignificant
of no account, unimportant, of no consequence, inconsequential, minor, paltry, petty, slight, negligible, immaterial, of no merit, of no value, valueless, worthless
ANTONYMS

profound, heavyweight