UNFA'VORABLE, adjective 1. Not favorable; not propitious; not disposed or adapted to countenance or support. We found the minister's opinion unfavorable to our project. The committee made a report unfavorable to the petitioner. 2. Not propitious; not adapted to promote any object; as weather unfavorable for harvest. 3. Not kind; not obliging. 4. Discouraging; as unfavorable prospects.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI