Unprofitable; unsuccessful.

Profitless, ineffectual, unsuccessful.

Not profitable, unprofitable.

Producing or bringing about no advantage, profit, or gain; tending to, resulting in, or marked by thriftlessness, waste, or extravagance…

Unprofitable; useless.

That is without reward; unrewarded. Cf. thankless, adj.

Not thriving; lacking prosperity or success; unsuccessful, profitless.

Unsuitable; unprofitable.

Unprofitable, worthless, useless. Now rare.

Yielding no profit; unprofitable, useless.

(un-, prefix1 affix 1.)

That has not profited or benefited from something; unrewarded.

Bringing no gain or profit; unprosperous.

(un-, prefix1 affix 4.)

? Fruitless, profitless. Obsolete. rare.

Producing no gain; unprofitable; useless.

Unprofitable.

Lacking in reward; not rewarding or satisfying.

Not compensated by any gain or good.

That does not repay; unrewarding of effort. Chiefly figurative.

(un-, prefix1 affix 1.)

attributive and figurative, applied to something that ‘leads nowhere’, esp. employment that offers no opportunities for promotion or advancement.

attributive or as adj. (a) That leads nowhere; having no possibilities for advance, promotion, etc.; (b) dead-end kid: a tough young person such as…