Adjective egotistical
Synonyms: arrogant, big-headed, boastful, cocky, conceited, egocentric, egoistic, haughty, high-and-mighty, inflated, narcissistic, ostentatious, overweening, pleased with oneself, proud, puffed up, self-important, stuck-up, swaggering, swollen-headed, vainglorious
Antonyms: modest, shy
Adjective futile, useless
Synonyms: abortive, barren, bootless, delusive, delusory, empty, frivolous, fruitless, going nowhere, hollow, idle, inefficacious, insignificant, in vicious circle, misleading, not a prayer, no-win, nugatory, on a treadmill, otiose, paltry, petty, pointless, profitless, puny, senseless, shuck, slight, sterile, time-wasting, trifling, trivial, unavailing, unimportant, unnotable, unproductive, unprofitable, valueless, void, worthless
Antonyms: possible