| A | B |
| IMPOVERISH | v to reduce to poverty; to make destitute |
| IMPREGNABLE | adj unconquerable; able to withstand attack |
| IMPRESARIO | n a person who manages public entertainments (especially operas |
| IMPROMPTU | adj done without preparation |
| IMPROVISE | v to perform without preparation; to make do with whatever materials are available |
| IMPUNITY | n freedom from punishment or harm |
| INADVERTENT | adj unintentional; heedless; not planned |
| INALIENABLE | adj sacred; incapable of being transferred |
| INCARNATION | n embodiment |
| INCENDIARY | adj used for setting property on fire; tending to arouse passion or anger; inflammatory |
| INCLINATION | n tendency; preference; liking |
| INCULCATE | v to instill or implant by repeated suggestions or admonitions |