Displaying or marked by too little persistence, especially:
maybe not regular or foreseeable; unpredictable: inconsistent behavior.
with a lack of proper reasonable relation; contradictory: contradictory statements.
perhaps not in contract or equilibrium; incompatible: an intersection inconsistent with the road map.
Mathematics maybe not solvable when it comes to unknowns because of the same collection of values. Used of two or more equations or inequalities.
Not consistent; showing inconsistency; irreconcilable; contradictory, or having contradictory implications; discordant; at variance, esp. as regards personality, sentiment, or action; incompatible; incongruous.
maybe not exhibiting uniformity of sentiment, steadiness to concept, etc.; unequal; fickle; changeable.