Adjectives

(s)conceited, egotistic, egotistical, self-conceited, swollen, swollen-headed, vaincharacteristic of false pride; having an exaggerated sense of self-importance“a conceited fool”, “an attitude of self-conceited arrogance”, “an egotistical disregard of others”, “so swollen by victory that he was unfit for normal duty”, “growing ever more swollen-headed and arbitrary”, “vain about her clothes”
(s)bootless, fruitless, futile, sleeveless, vainunproductive of success“a fruitless search”, “futile years after her artistic peak”, “a sleeveless errand”, “a vain attempt”