Synonyms and related words :
adulterated, airy, asinine, attenuate, attenuated, boyish, breakable, brittle, brittle as glass, catchpenny, cheap-jack, cobwebby, crackable, crisp, crispy, crumbly, crushable, cut, dainty, decrepit, delicate, delicately weak, diaphanous, dilapidated, dilute, diluted, effeminate, empty, ethereal, fatuous, feeble, filmy, fine, fine-drawn, finespun, fissile, flabby, flaccid, floppy, foolish, fracturable, fragile, frail, frangible, friable, fribble, fribbling, frivolous, frothy, futile, gaseous, gauzy, gimcrack, gimcracky, girlish, gossamer, gossamery, gracile, idle, implausible, improbable, inadequate, inane, inconceivable, inconclusive, incredible, infirm, insubstantial, jerry, jerry-built, lacerable, lacy, lax, light, lightweight, limp, loose, makeshift, misty, namby-pamby, nugacious, nugatory, otiose, paltry, papery, pasteboardy, poor, puny, ramshackle, rare, rarefied, relaxed, rickety, rubbery, scissile, shaky, shallow, shatterable, shattery, sheer, shivery, silly, sissified, sleazy, slender, slenderish, slight, slight-made, slim, slimmish, slinky, small, splintery, subtile, subtle, superficial, svelte, sylphlike, tacky, tenuous, thin, thin-bodied, thin-set, thin-spun, thinned, thinned-out, thinnish, threadlike, transparent, trifling, trite, trivial, unbelievable, uncompact, uncompressed, unconvincing, unproved, unrigorous, unsatisfactory, unsound, unsubstantial, unsustained, vacuous, vague, vain, vapid, vaporous, vulnerable, wasp-waisted, watered, watered-down, watery, weak, weakly, willowy, windy, wiredrawn, wispy, womanish