| A | B |
| ideology (n) | a manner or the content of thinking characteristic of an individual, group, or culture |
| immaterial (adj) | not consisting of matter; of no substantial consequence |
| immunity (n) | a condition of being able to resist a particular disease especially through preventing development of a pathogenic microorganism or by counteracting the effects of its products |
| impertinent (adj) | irrelevant; given to or characterized by insolent rudeness |
| implement (n) | a device used in the performance of a task--tool; utensil |
| implement (v) | carry out , accomplish ; especially : to give practical effect to and ensure of actual fulfillment by concrete measures |
| inaudible (adj) | not audible |
| incalculable (adj) | not capable of being calculated: as a: very great b: not predictable |
| incandescent (adj) | a: white, glowing, or luminous with intense heat b: strikingly bright, radiant, or clear c: marked by brilliance especially of expression |
| incessant (adj) | continuing or following without interruption |
| incompatible (adj) | incapable of association or harmonious coexistence; unsuitable for use together because of undesirable chemical or physiological effects |
| incomprehensible (adj) | impossible to understand |
| inconspicuous (adj) | not readily noticeable |
| inconvenient (adj) | not convenient especially in giving trouble or annoyance : inopportune |
| indivisible (adj) | not divisible |
| induction (n) | initiation; a preface, prologue, or introductory scene especially of an early English play; the act of causing or bringing on or about |
| incandescent (n) | lightbulb |