| impossibility |
the state or quality of being impossible. [2 definitions] |
| impossible |
not able to happen, exist, or be done. [3 definitions] |
| impossibly |
in an impossible way. [3 definitions] |
| impost |
a tax or duty, such as a customs fee. [2 definitions] |
| impostor |
one who defrauds or deceives by pretending to be another person. |
| imposture |
the act or practice, or an instance of deceiving by taking on a false identity. |
| impotence |
the condition or trait of being impotent; weakness; ineffectiveness. [3 definitions] |
| impotency |
impotence. |
| impotent |
lacking strength, effectiveness, or capability. [3 definitions] |
| impound |
to shut up or confine (an animal) in a pound. [3 definitions] |
| impoverish |
to make poor; cause to live in poverty. [2 definitions] |
| impoverished |
poor or caused to become poor; lacking in the essentials of life. |
| impracticable |
not capable of being put into practice or carried out. |
| impractical |
not useful or wise to put into practice; not workable. [2 definitions] |
| imprecate |
to invoke (a curse, disaster, or the like) on another. |
| imprecation |
a curse, uttered or thought of. [2 definitions] |
| imprecise |
not exact, accurate, or well-defined; not precise; vague. |
| imprecision |
the condition or quality of being imprecise. [2 definitions] |
| impregnable1 |
able to withstand any attack, as a fortress. [2 definitions] |
| impregnable2 |
capable of being impregnated or fertilized, as an egg. |
| impregnate |
to make (a female animal or human) pregnant, or to make (an egg) fertile. [2 definitions] |