| 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 |
| Insecticide in disrepute | 24 |
| Insecticide ingredient | 22 |
| Insecticide, for short | 22 |
| Insecticides, for short | 23 |
| Insectivore of Madagascar | 25 |
| Insectivore's meal | 22 |
| Insectivorous creature | 22 |
| Insectivorous songbird | 22 |
| Insects course, for short | 25 |
| Insects for baseballers | 23 |
| Insects found in trunks | 23 |
| Insects in a biblical plague | 28 |
| Insects in final stages | 23 |
| Insects in the cocoon stage | 27 |
| Insects in the woodwork | 23 |
| Insects in their cocoons | 24 |
| Insects often strained at | 25 |
| Insects related to katydids | 27 |
| Insects that walk on water | 26 |
| Insects with big stingers | 25 |
| Insects' antenna sockets | 28 |
| Insects' honey tubes | 24 |
| Insects' lower lips | 23 |
| Insects' sense organs | 25 |
| Insects' sensory organs | 27 |
| Insects' spiracles | 22 |
| Insecure potential unit? | 24 |
| Insecure vet's admission? | 29 |
| Insensitive and coarse | 22 |
| Insensitive, for short | 22 |
| Insensitive, in modern times | 28 |
| Inseparable friends of legend | 29 |
| Insert "@#$%!," say | 29 |
| Insert blank pages between | 26 |
| Insert blank pages in a book | 28 |
| Insert carets, perhaps | 22 |
| Insert cartridges again | 23 |
| Insert film into a camera | 25 |
| Insert for a Selectric | 22 |
| Insert for some cameras | 23 |
| Insert for some old cameras | 27 |
| Insert fresh cartridges | 23 |
| Insert in a tape recorder | 25 |
| Insert surreptitiously | 22 |
| Insertion in an operation | 25 |
| Insertion into an old deck | 26 |
| Insertion point indicator | 25 |
| Inserts wrong, as fax paper | 27 |
| Inserts, as a cartridge | 23 |
| Inside diameter, as of a gun | 28 |
| Inside information, in slang | 28 |
| Inside items of information | 27 |
| Inside line at the track? | 25 |
| Inside look at a Theban king? | 29 |
| Inside look, for short? | 23 |
| Inside of a jumping bean | 24 |
| Inside of a paper towel roll | 28 |
| Inside of a winter jacket | 25 |
| Inside track, at times | 22 |
| Inside, in combinations | 23 |
| Inside-of-shirt feature | 23 |
| Inside-the-Beltway fig. | 23 |
| Insider's knowledge | 23 |
| Insider's offering | 22 |
| Insider's vocabulary | 24 |
| InsiderÂ’s vocabulary | 24 |
| Insiders' languages | 23 |
| Insidious computer program | 26 |
| Insignia on Cardinals caps | 26 |
| Insignia on Pirates uniforms | 28 |
| Insignia on some fighters | 25 |
| Insignificant fellows: var. | 27 |
| Insignificant individual | 24 |
| Insignificant New York band? | 28 |
| Insignificant occasion | 22 |
| Insignificant quibbles | 22 |
| Insignificant to the max | 24 |
| Insignificant train station | 27 |
| Insignificant woodpile? | 23 |
| Insignificant, as a town | 24 |
| Insignificant, as chatter | 25 |
| Insignificant, as gossip | 24 |
| Insignificant, in a way | 23 |
| Insignificant, slangily | 23 |
| Insincere encouragement | 23 |