| A | B |
| haughty | scornfully superior and aloof |
| heinous | grossly wicked or vile |
| ignominy | dishonor or disgrace usually resulting from some sort of shameful conduct |
| illicit | unlawful, illegal |
| immaculate | entirely free of stain, blemish, fault, or error; spotless |
| immunity | exemption from something, especially a disease |
| immutable | not subject to change or modification |
| impasse | deadlock or dead end |
| impediment | a hindrance or obstruction |
| impervious | incapable of being penetrated or affected |
| implacable | incapable of being pacified or appeased; inflexible |
| implicit | understood, implied |
| impugn | to call into question; to cast doubt on |
| incarcerate | to put in jail or otherwise confine |
| incense | to make violently angry |