| Inquisition's bane | 22 |
| Inquisitive Carlin? (Rey) | 25 |
| Inquisitive interjections | 25 |
| Inquisitive, to a fault | 23 |
| Inquisitive-sounding letter | 27 |
| Inquisitor __ de Torquemada | 27 |
| Inquisitor's quarry | 23 |
| Ins and outs of finance? | 24 |
| Ins and outs of tennis | 22 |
| Ins and outs, so to speak | 25 |
| Ins.-industry designation | 25 |
| Insane guitarist Malmsteen | 26 |
| Insane, in the Highlands | 24 |
| Insanity, especially in March | 29 |
| Insatiable eaters, in slang | 27 |
| Inscribe on a trophy, e.g. | 26 |
| Inscribe, as in heraldry | 24 |
| Inscribed monument (Var.) | 25 |
| Inscribed pillar (Var.) | 23 |
| Inscribed stone column | 22 |
| Inscribed stone markers | 23 |
| Inscribed stone pillar | 22 |
| Inscribed stone pillars | 23 |
| Inscribed stone, maybe | 22 |
| Inscribed with mystic marks | 27 |
| Inscription in memoriam | 23 |
| Inscription on a blue box | 25 |
| Inscription on a candy heart | 28 |
| Inscription on a class ring | 27 |
| Inscription on a letter box | 27 |
| Inscription on some ingots | 26 |
| Insect a doodlebug loves | 24 |
| Insect after metamorphosis | 26 |
| Insect at the age of consent | 28 |
| Insect drawn to flames | 22 |
| Insect eaten by ladybugs | 24 |
| Insect enjoying a novel? | 24 |
| Insect for English sport fan | 28 |
| Insect found in deadwood | 24 |
| Insect found in hot areas | 25 |
| Insect from East Sussex? | 24 |
| Insect going after combat | 25 |
| Insect in a marching column | 27 |
| Insect in a summer swarm | 24 |
| Insect in its adult stage | 25 |
| Insect in its final stage | 25 |
| Insect in one's pants? | 26 |
| Insect involved in looting | 26 |
| Insect living in deadwood | 25 |
| Insect mailing a package? | 25 |
| Insect mimicking a donkey? | 26 |
| Insect of musical note | 22 |
| Insect often told to fly home | 29 |
| Insect pupa sold as fish food | 29 |
| Insect repellent brand | 22 |
| Insect repellent compound | 25 |
| Insect repellent ingredient | 27 |
| Insect reproductive stage | 25 |
| Insect stage after larva | 24 |
| Insect that can mimic a leaf | 28 |
| Insect that eats its mate | 25 |
| Insect with a long proboscis | 28 |
| Insect with a pollen basket | 27 |
| Insect with a slender waist | 27 |
| Insect with abdominal pincers | 29 |
| Insect with grasping forelegs | 29 |
| Insect with lime-green wings | 28 |
| Insect with striped wings | 25 |
| Insect's adult stage | 24 |
| Insect's appendage | 22 |
| Insect's bedtime ritual? | 28 |
| Insect's final stage | 24 |
| Insect's legal document? | 28 |
| Insect's lower lip | 22 |
| Insect's mouth part | 23 |
| Insect's opening for air | 28 |
| Insect's organ of sense | 27 |
| Insect's post-pupal stage | 29 |
| Insect's quiescent stage | 28 |
| Insect's receptacle | 23 |
| Insect's secretion | 22 |
| Insect's sense organs | 25 |
| Insect's sensory device | 27 |
| Insect's sensory organ | 26 |
| Insect's sensory organs | 27 |
| Insect's trachea, e.g. | 26 |
| Insect's vital vessel | 25 |
| Insect's working hours? | 27 |
| Insect-eater of Madagascar. | 27 |
| Insect-eating songbird | 22 |
| Insect-repellent compound | 25 |
| Insect-repelling chemical | 25 |
| Insect-repelling compound | 25 |
| Insect-world animated film | 26 |
| Insectarium's place | 23 |
| Insecticide alternative | 23 |
| Insecticide banned by the EPA | 29 |
| Insecticide banned in 1972 | 26 |
| Insecticide banned since 1972 | 29 |
| Insecticide banned since 1973 | 29 |