untoward

adjective3

1. •
   Unseemly, improper.

   • She could hardly have made a more untoward choice. — 1814
2. •
   Unfavourable, adverse, or disadvantageous.

   • At Tebay however, he began to get the mastery over these untoward conditions, and actually got back a little time up to Shap, after which all was plain sailing. — 1941
3. •
   Unruly, troublesome; not easily guided.