HID'EOUS, adjective 1. Frightful to the sight; dreadful; shocking to the eye; applied to deformity; as a hideous monster; a hideous spectacle; hideous looks. 2. Shocking to the ear; exciting terror; as a hideous noise. 3. Detestable.
Source: Webster's 1828 American Dictionary ↗ · public-domain · returned verbatim, no AI