| Immortal diamond nickname | 25 |
| Immortal helmet wearer | 22 |
| Immortal jazz bassist Charlie | 29 |
| Immortal name in daredeviltry | 29 |
| Immortal name in tennis | 23 |
| Immortal P.G.A. nickname | 24 |
| Immortal racehorse Man __ | 25 |
| Immortal racer Earnhardt | 24 |
| Immortal start for Caesar | 25 |
| Immortal Yankee Gehrig | 22 |
| Immortality, of a sort | 22 |
| Immune response component | 25 |
| Immune response orchestrator | 28 |
| Immune response stimulus | 24 |
| Immune response trigger | 23 |
| Immune system circulators | 25 |
| Immune system component | 23 |
| Immune system components | 24 |
| Immune system defender | 22 |
| Immune system defenders | 23 |
| Immune system lymphocyte | 24 |
| Immune system lymphocytes | 25 |
| Immune-system component | 23 |
| Immune-system components | 24 |
| Immunity bestower of sorts | 26 |
| Immunological follow-up | 23 |
| Immunologist's concern | 26 |
| Immunologists' samples | 26 |
| Imogene from Philadelphia | 25 |
| Imogene of comedy lore | 22 |
| Imogene's comic partner | 27 |
| Imogene's TV partner | 24 |
| Imogene, the comedienne | 23 |
| Imp who annoys the webmaster? | 29 |
| Impact made by Rich Little? | 27 |
| Impair through inactivity | 25 |
| Impaired by age and dampness | 28 |
| Impaired one's hearing | 26 |
| Impala's big cousin | 23 |
| Impart gradually: Var. | 22 |
| Impart pearls of wisdom to | 26 |
| Impart to, as a guilt trip | 26 |
| Impart, as moral values | 23 |
| Imparted a slight taste to | 26 |
| Imparter of fruity overtones | 28 |
| Impassioned, as a plea | 22 |
| Impatient "OK" | 24 |
| Impatient agreement, maybe | 26 |
| Impatient driver, often | 23 |
| Impatient eater's ailment | 29 |
| Impatient gift recipients | 25 |
| Impatient interjection | 22 |
| Impatient one's acronym | 27 |
| Impatient one's order | 25 |
| Impatient one's prod? | 25 |
| Impatient one's prompt | 26 |
| Impatient one's question | 28 |
| Impatient one's urging | 26 |
| Impatient person's dread | 28 |
| Impatient Spaniard's word | 29 |
| Impeachment trial juror | 23 |
| Impeachment trier: Abbr. | 24 |
| Impeccably fashionable | 22 |
| Impecunious opera buff | 22 |
| Impede, with "down" | 29 |
| Impede, with "up" | 27 |
| Impedes, with "up" | 28 |
| Impediment to getting high? | 27 |
| Impediment to progress | 22 |
| Impediment to smooth sailing | 28 |
| Impediment to smooth sailing? | 29 |
| Impediment's query? | 23 |
| Impedimental officialese | 24 |
| Impediments to liberty | 22 |
| Impediments to teamwork | 23 |
| Impediments, so to speak | 24 |
| Impeller on a jet engine | 24 |
| Impend; aftermath of sorts | 26 |
| Impending clouds, e.g. | 22 |
| Impending evil or danger | 24 |
| Imperative alternative | 22 |
| Imperative and indicative | 25 |
| Imperative and subjunctive | 26 |
| Imperative for Dick and Jane | 28 |
| Imperative in a carol title | 27 |
| Imperatives in an old song | 26 |
| Imperf., on a sale tag | 22 |
| Imperfect bridge holding | 24 |
| Imperfect goods: Abbr. | 22 |
| Imperfect gravy feature | 23 |
| Imperfect merchandise: Abbr. | 28 |
| Imperfect piece of goods | 24 |
| Imperfect, as a substitute | 26 |
| Imperfect, as goods: Abbr. | 26 |
| Imperfective, as a verb | 23 |
| Imperfectly closed, as a door | 29 |
| Imperial attire of old | 22 |
| Imperial capital of Japan | 25 |
| Imperial Chinese dynasty | 24 |
| Imperial Guard's home | 25 |