Synonyms of time-wasting

1 Syllable
slight, shuck, void
2 Syllables
pointless, shucker, trifling, idle, trivial, paltry, petty, barren, worthless, fruitless, empty, bootless, puny, no-win, hollow
3 Syllables
frivolous, idleness, inertness, misleading, sterile, otiose, senseless, joblessness, pottering, valueless, profitless
4 Syllables
abortive, delusive, dilatory, unimportant, moratory, unavailing, nugatory, unnotable, delusory
5 Syllables
insignificant, unprofitable, unproductive, inactivity, inefficacious