1. Not firmly or solidly positioned
   "an unfirm stance"
   - unsteady 
2. (of soil) unstable
   "unfirm earth"
   - shifting

See also: loose, unfixed

• impartiality
• impartially
• imparting
• impassable
• impasse
• impassibility
• impassible
• impassion
• impassionate
• impassioned
• impassive
• impassively
• impassiveness
• impassivity
• impasto
• impatience
• impatiens
• Impatiens capensis
• impatient
• impatiently
• impeach
• impeachability
• impeachable
• impeacher
• impeachment