| in someone's shoes | | | |
| in someone's view | | | |
| in spades | | | |
| in spite of | | | |
| in splits | | | |
| inspreken | | | |
| installed base | | | |
| in stitches | | | |
| in stride | | | |
| insult one's intelligence | | | |
| interpret away | | | |
| in the act | | | |
| in the altogether | | | |
| in the bag | | | |
| in the black | | | |
| in the blink of an eye | | | |
| in the books | | | |
| in the buff | | | |
| in the business of | | | |
| in the can | | | |
| in the cards | | | |
| in the clear | | | |
| in the dark | | | |
| in the dock | | | |
| in the doghouse | | | |
| in the drink | | | |
| in the driver's seat | | | |
| in the driving seat | | | |
| in the fast lane | | | |
| in the final analysis | | | |
| in the first place | | | |
| in the flower of one's youth | | | |
| in the foothills | | | |
| in the front row | | | |
| in the game | | | |
| in the green tree … in the dry | | | |
| in the groove | | | |
| in the here and now | | | |
| in the hole | | | |
| in the hopper | | | |
| in the hospital | | | |
| in the hot seat | | | |
| in the interest of justice | | | |
| in the know | | | |
| in the lead | | | |
| in the least | | | |
| in the limelight | | | |
| in the line of duty | | | |
| in the long run | | | |
| in the long term | | | |
| in the lump | | | |
| in the making | | | |
| in the money | | | |
| in the nick of time | | | |
| in the nip | | | |
| in the offing | | | |
| in the pink of health | | | |
| in the pipeline | | | |
| in the post | | | |
| in the raw | | | |
| in the red | | | |
| in the reign of Queen Dick | | | |
| in the right place at the right time | | | |
| in the running | | | |
| in the sack | | | |
| in the saddle | | | |
| in the same boat | | | |
| in the same breath | | | |
| in the same shoes | | | |
| in the short run | | | |
| in the snap of one's fingers | | | |
| in the soup | | | |
| in the spotlight | | | |
| in the stars | | | |
| in the stratosphere | | | |
| in the straw | | | |
| in the streets | | | |
| in the swim | | | |
| in the tank | | | |
| in the thick of | | | |
| in the thick of it | | | |
| in the toilet | | | |
| in the trenches | | | |
| in the twinkling of an eye | | | |
| in the wake of | | | |
| in the way | | | |
| in the way of | | | |
| in the wind | | | |
| in the wink of an eye | | | |
| in the works | | | |
| in the world | | | |
| in the worst way | | | |
| in the wrong place at the wrong time | | | |
| in the zone | | | |
| in this day and age | | | |
| in thunder | | | |
| in thunderation | | | |
| into detail | | | |
| in token of | | | |
| in too deep | | | |