Synonyms and related words :
Gascon, abortive, absurd, airy, arrogant, asinine, barren, baseless, boastful, boasting, bootless, bootlessly, braggart, bragging, catchpenny, cocky, complacent, conceited, consequential, counterproductive, coxcombical, dandyish, delusive, delusory, doomed, effete, egocentric, egoistic, egotistical, empty, etiolated, fanfaron, fanfaronading, fatuitous, fatuous, feckless, flimsy, foolish, foppish, foredoomed, fribble, fribbling, frivolous, frothy, fruitless, fruitlessly, futile, futilely, gasconading, groundless, haughty, hollow, idle, ill-founded, improperly, in vain, inadequate, inane, ineffective, ineffectual, inefficacious, inoperative, invalid, light, misleading, narcissan, narcissine, narcissistic, narcistic, nugacious, nugatory, of no force, otiose, overproud, overweening, paltry, petty, pointless, profitless, proud, puny, self-admiring, self-advertising, self-applauding, self-approving, self-assuming, self-complacent, self-conceited, self-congratulating, self-congratulatory, self-content, self-contented, self-delighting, self-endeared, self-esteeming, self-flattering, self-glorious, self-gratulating, self-gratulatory, self-important, self-lauding, self-loving, self-respecting, self-satisfied, self-sufficient, self-vaunting, shallow, silly, slender, slight, smug, sterile, stuck-up, superficial, thrasonic, thrasonical, trifling, trite, trivial, unavailable, unavailing, unbased, unfounded, ungrounded, unproductive, unprofitable, unsuccessful, unsuccessfully, unsupportable, unsupported, unsustainable, unsustained, untenable, unwarranted, useless, vacuous, vainglorious, vainly, valueless, vapid, vaporing, vaunting, void, windy, without basis, without foundation, worthless