1. According to circumstances
   "he was convicted circumstantially" 
2. Insofar as the circumstances are concerned
   "the account was circumstantially accurate" 
3. In minute detail
   - minutely 
4. Without advance planning
   - by chance, accidentally, unexpectedly

See also: circumstantial

• yours truly
• yourself
• yourselves
• yous
• youse
• youth
• youth crusade
• youth culture
• youth gang
• youth hostel
• youth movement
• youth subculture
• youth-on-age
• youthful
• youthfully
• youthfulness
• yowl
• yowler
• Ypres
• Yquem
• yr
• ytterbite
• ytterbium
• yttria
• yttric