unfavourable

adj

1.
not encouraging or approving or pleasing
unfavorable
Derived from:
unfavourableness
2.
(of winds or weather) tending to hinder or oppose
unfavorable
Derived from:
unfavourableness
3.
involving or creating circumstances detrimental to success or effectiveness
hindered thwart wither disadvantageous unfavorable
Derived from:
unfavourableness