1. Not feasible; impracticable.

Nuttall's Standard dictionary of the English language By Nuttall, P.Austin

• infeasable,
• inefeasible,
• infeasibilty,
• unfeasible,
• jnfeasible,
• knfeasible,
• inveasible,
• infeazible,
• infeasoble,
• infesible,
• infeasibel,
• inferangible,
• enfeasible,
• inapeasable,
• Inappeasible,
• Increasible,
• infecctible,
• Infesable,
• infusible,
• ineraseble

• invasive,
• infeasibility,
• investiture,
• in passing,
• invisibly,
• infested,
• investing,
• invisible,
• invisibleness,
• in-basket,
• invisibility,
• invested,
• investigate.

The adjective form of "infeasible" is "infeasible" itself.

The plural form of the word "infeasible" is "infeasibles".

The singular form of the word "infeasible" is "infeasibility"