| It's immeasurably deep | 26 |
| It's impacted by global warming: Abbr. | 42 |
| It's impervious to indigestion | 34 |
| It's implicit in all knock-knock jokes | 42 |
| It's implicit in knock-knock jokes | 38 |
| It's impolite | 17 |
| It's important to make a good one | 37 |
| It's important to meet them | 31 |
| It's important to read it before signing | 44 |
| It's imposed on some purchases made out of state | 52 |
| It's impossible to argue with one | 37 |
| It's impossible to erase | 28 |
| It's impractical to live in | 31 |
| It's impressive | 19 |
| It's in | 11 |
| It's in a blind | 19 |
| It's in a carol? | 20 |
| It's in a certain range | 27 |
| It's in a cubicle | 21 |
| It's in a cylinder | 22 |
| It's in a jam | 17 |
| It's in a jamb | 18 |
| It's in a lot of poetry? | 28 |
| It's in a nutshell | 22 |
| It's in a pickle | 20 |
| It's in a round red-rind wrapper | 36 |
| It's in a soft hand | 23 |
| It's in a zombie | 20 |
| It's in all living cells | 28 |
| It's in an env. | 19 |
| It's in an old way | 22 |
| It's in an upright position during landing | 46 |
| It's in central New York | 28 |
| It's in chains | 18 |
| It's in circulation | 23 |
| It's in Cuba libre | 22 |
| It's in development | 23 |
| It's in for a while | 23 |
| It's in for the long haul | 29 |
| It's in front of a benched player | 37 |
| It's in front of a catcher | 30 |
| It's in front of a mizzen | 29 |
| It's in front of Fernando | 29 |
| It's in front of the cockpit | 32 |
| It's in front of the cornea | 31 |
| It's in front of the tee | 28 |
| It's in general circulation | 31 |
| It's in it for the long haul | 32 |
| It's in Kasparov's corner | 33 |
| It's in Lepus | 17 |
| It's in many poems | 22 |
| It's in much poetry | 23 |
| It's in numbers, according to adage | 39 |
| It's in Obama's hands now | 33 |
| It's in Off! | 16 |
| It's in one era . . . out the other | 39 |
| It's in one era, out the other | 34 |
| It's in one year and out the other | 38 |
| It's in oranges | 19 |
| It's in our jeans | 21 |
| It's in overalls | 20 |
| It's in peak shape | 22 |
| It's in play | 16 |
| It's in poetry | 18 |
| It's in poetry? | 19 |
| It's in Rio de Janeiro | 26 |
| It's in Roy G. Biv | 22 |
| It's in San Fernando Valley | 31 |
| It's in some people's veins | 35 |
| It's in some pitchers' repertoires | 42 |
| It's in some pits | 21 |
| It's in stitches | 20 |
| It's in the act | 19 |
| It's in the air | 19 |
| It's in the bag | 19 |
| It's in the bag, on the mound | 33 |
| It's in the ballpark | 24 |
| It's in the Bible | 21 |
| It's in the black | 21 |
| It's in the bog | 19 |
| It's in the book | 20 |
| It's in the bridal shower, traditionally | 44 |
| It's in the bucket | 22 |
| It's in the can | 19 |
| It's in the can, maybe | 26 |
| It's in the can, sometimes | 30 |
| It's in the can? | 20 |
| It's in the cards | 21 |
| It's in the carpet | 22 |
| It's in the catty corner? | 29 |
| It's in the cellar | 22 |
| It's in the center of a vegetable tray | 42 |
| It's in the center of center court | 38 |
| It's in the center of Jerusalem | 35 |
| It's in the center of Jerusalem? | 36 |
| It's in the center of similes | 33 |
| It's in the chips | 21 |
| It's in the constriction business | 37 |
| It's in the dumps | 21 |
| It's in the eye of the beholder | 35 |