1. Having no cause or apparent cause
   "we cannot regard artistic invention as...uncaused and unrelated to the times"
   - causeless, fortuitous

See also: unintended

• grounding
• groundkeeper
• groundless
• groundlessly
• groundlessness
• groundling
• groundmass
• groundnut
• groundnut oil
• groundnut vine
• grounds
• groundsel
• groundsel bush
• groundsel tree
• groundsheet
• groundskeeper
• groundsman
• groundspeed
• groundwater level
• groundwork
• group
• group A
• group AB
• group action
• group Amentiferae