| A | B |
| Iconoclast | n. attacker of beliefs |
| Ignoble | adj. dishonorable, disgraceful |
| Immutable | adj. unchangeable; steadfast |
| Implicit | adj. absolute, suggested |
| Impugn | v. challenge; question |
| Impute | v. blame |
| Incipient | adj. in an early stage; commencing |
| Ineffable | adj. notable to be expressed in words |
| Inexorable | adj. unyielding; relentless |
| Ingenous | adj. innocent |
| Inherrent | adj. unborn, a permanent and essential quality |
| Iniquitous | adj. wicked; unjust |
| Innocuous | adj. harmless; mild |
| Insipid | adj. dull; lacking spirit |
| Intrepid | adj. brave; fearless |
| Invidious | adj. causing ill will, offensive and unfair |
| Irascible | adj. irritable; easily angered |
| Jocose | adj. jesting; humorours |
| Juxtapose | v. place together; put side by side |
| Ken | n. range of sight or knowledge |