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

See also: extemporarily, unprepared

• intrepid
• intrepidity
• intrepidly
• intricacy
• intricate
• intricately
• intrigue
• intriguer
• intriguing
• intriguingly
• intrinsic
• intrinsic factor
• intrinsic fraud
• intrinsical
• intrinsically
• intro
• introduce
• introduction
• introductory
• introgression
• introit
• introitus
• introject
• introjected
• introjection