Disadvantageous, unprofitable.

Evil, wicked; harmful. Obsolete.

Not thriving or prosperous; unsuccessful; unfortunate. Obsolete.

(un-, prefix1 affix 4.)

Unprofitable; detrimental.

Creating or resulting in unfavourable circumstances; that places a person or thing at a disadvantage with regard to another or others; involving or…

Disadvantageous, hurtful, injurious. Obsolete.

Tending towards disadvantage; disadvantageous, detrimental.

Not advantageous or profitable.

Productive of loss; detrimental; unprofitable.

Injurious, harmful; unlucky. Usually with for or to. Cf. nought, pron. 3. Obsolete. rare.

Disadvantageous.

Tending to do disservice; unhelpful, hurtful, detrimental.

= incommodious, adj.

Prejudicial, disadvantageous.

Of, relating to, or characteristic of zero-sum games or situations (see sense 1).

Negative, disadvantageous.