1. (a.) Of little importance; trifling; vain; futile; insignificant\.

2. (a.) of no force; inoperative; ineffectual.

NG airy asinine barren bootless catchpenny cheap counterproductive effete empty etiolated fatuitous fatuous feckless flimsy foolish fribble fribbling frivolous frothy fruitless futile good-for-naught good-for-nothing hollow idle inadequate inane ineffective ineffectual inefficacious inoperative invalid junk junky light no-account no-good not worth having not worth mentioning not worthwhile nugacious of no force otiose shabby shallow shoddy silly slender slight sterile superficial trashy trifling trite trivial unavailing useless vacuous vain valueless vapid windy worthless