1. With little or no preparation or forethought
   "a few unrehearsed comments"
   - ad-lib, extemporaneous, extemporary, extempore, impromptu, offhand, offhanded, off-the-cuff

See also: unprepared

• horologist
• horology
• horoscope
• horoscopy
• Horowitz
• horrendous
• horrendously
• horrent
• horrible
• horribleness
• horribly
• horrid
• horridly
• horridness
• horrific
• horrifically
• horrified
• horrify
• horrifying
• horrifyingly
• horripilate
• horripilation
• horror
• horror film
• horror movie