Synonyms of unprofitable

2 Syllables
drossy, pointless, shucker, goalless, worthless, fruitless, no-good, thankless, scrapper
3 Syllables
no-account, nonprofit, sterile, debit-side, resultless, forceless, useless, time-wasting, futile, unhelpful, profitless, slack-spined
4 Syllables
inutile, purposeless, uncreative, unusable, nongermane, unavailing, sanitized, unprolific, dyslogistic, motiveless, unnotable, unsuccessful, nonfunctional, unusuable, defeasible, undirected, unfunctional, unreturned
5 Syllables
invertebrate, uninventive, disadvantageous, unproductive, ineffective, anticlimactic, unlucrative, inefficacious
7 Syllables
unremunerative