Synonyms of tenuous

1 Syllable
light, faint, slim, slight, scant, fine, rare, frail
2 Syllables
faintest, twiggy, narrow, frailer, prosier, airy, dubious, frailest, slimmest, flimsy, stalky, scrimpy, slender, shaky, fainter, hohum, subtle, doubtful, reedy, ho-hum, standout, aerial, sketchy, rarest, prosy, subtler, subtlest, meager, slimmer
3 Syllables
insipid, slenderer, subtilest, exiguous, rarefied, nebulous, hairline, ethereal, rarer, subtiler, gracile, ungrounded, gossamer
4 Syllables
questionable, evanescent, unemphatic, unconspicuous, attenuate, rattleboned, delicate, nonexistent, insubstantial, inconspicuous, characterless, impalpable, attenuated
5 Syllables
insignificant, unnoticeable