unnotable (adjective) vain: futile, useless
Sinonime: abortive,
barren, bootless,
delusive, delusory,
empty,
frivolous,
fruitless, going nowhere,
hollow,
idle, in vicious circle, inefficacious,
insignificant,
misleading, no-win, not a prayer,
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,
worthlessAntonime: possible