unfavorableadjective
us/ʌnˈfeɪ·vər·ə·bəl/unfavorable adjective (CRITICIZING)
having or showing a negative opinion:
The play received generally unfavorable reviews.
unfavorable adjective (NOT HELPFUL)
not tending to help; not likely to lead to a positive result:
Unfavorable weather conditions this morning caused a postponement of the launch of the space shuttle.