Origin: Latin suffix -able
Unfavorable has 4 different meanings across 1 category:
not encouraging or approving or pleasing
"unfavorable conditions"
"an unfavorable comparison"
"unfavorable comments"
"unfavorable impression"
involving or creating circumstances detrimental to success or effectiveness
"a disadvantageous outcome"
"a well-known study from the 1970's showed that gender stereotyping placed women in a disadvantageous position"
"made an unfavorable impression"
Alternative spelling of unfavourable