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insubstantial

in·sub·stan·tial

insubstantial

 
pronunciation:
In sb staen shl
part of speech: adjective
definition 1: lacking firmness or substance; not substantial; slight.
There was some evidence to suspect him, but it was insubstantial and wouldn't stand up in court.She'd had an insubstantial breakfast and was hungry well before lunchtime.
antonyms:
solid, substantial
similar words:
aerial, flimsy, tenuous, thin
definition 2: not real; imagined.
antonyms:
substantial
similar words:
imaginary, phantom
derivations: insubstantially (adv.), insubstantiality (n.)