a.
1.
Unreal, shadowy, unsubstantial, supposititious, dreamy, delusive, deceitful, false, baseless, imaginary, empty, void.
2.
Unavailing, useless, bootless, ineffectual, fruitless, profitless, futile, nugatory, abortive, unprofitable, without avail, idle, to no purpose, to no end, ineffectual.
3.
Worthless, unsatisfying, unsatisfactory, vapid, unimportant, trivial, unessential, useless.
4.
Conceited, ~-glorious, inflated, arrogant, egotistical, overweening, ostentatious, high, self-sufficient, flushed, opinionated, self-satisfied, self-confident, self-admiring, self-opinioned, self-flattering, high-flown, puffed up, wise in one's own conceit.
5.
Showy, ostentatious, gaudy, glittering, gorgeous.