unfavourable

adjective4

1. •
   Serving to hinder or oppose; adverse, disadvantageous, inconducive, unsuitable.

   • The shade of a dense pine wood, is more unfavorable to the springing up of pines of the same species than of oaks within it. — 1863
2. •
   Of wind or weather: causing delay or obstacles; not conducive to travel or work; inclement.

   • The wind was right under the land, the tide unfavorable. — 1855
3. •
   Of a belief, state of mind, etc.: not favourable; disapproving.

   • [Y]et the thing she most dreaded was to offend the gypsies, by betraying her extremely unfavourable opinion of them, [...] — 1860
4. •
   Not auspicious; ill-boding.

   • The fact that the bride went through the ceremony without her bridal bouquet is looked upon by many as an unfavorable omen. — 1903