| In-born | 7 |
| In-box annoyance | 16 |
| In-box build-up | 15 |
| In-box clogger | 14 |
| In-box clutter | 14 |
| In-box clutter, perhaps | 23 |
| In-box contents | 15 |
| In-box contents: Abbr. | 22 |
| In-box fill | 11 |
| In-box fill: Abbr. | 18 |
| In-box filler | 13 |
| In-box filler, perhaps | 22 |
| In-box fillers | 14 |
| In-box input | 12 |
| In-box item | 11 |
| In-box item on one's birthday | 33 |
| In-box items | 12 |
| In-box junk | 11 |
| In-box locale | 13 |
| In-box material for some agents | 31 |
| In-box note, perhaps | 20 |
| In-box outcast | 14 |
| In-box pileup | 13 |
| In-box queue: Abbr. | 19 |
| In-box stack | 12 |
| In-box stock: Abbr. | 19 |
| In-box woe | 10 |
| In-browser programs | 19 |
| In-case connector | 17 |
| In-case link | 12 |
| In-class work | 13 |
| In-crowd | 8 |
| In-crowd actors? | 16 |
| In-crowd invitees | 17 |
| In-crowd outcast | 16 |
| In-crowd outsider | 17 |
| In-crowd roster | 15 |
| In-crowd wannabe | 16 |
| In-crowds | 9 |
| In-demand group | 15 |
| In-demand real estate listing | 29 |
| In-demand vehicles | 18 |
| In-depth examination | 20 |
| In-depth studies | 16 |
| In-favor vote | 13 |
| In-favor votes | 14 |
| In-favor-of arguments | 21 |
| In-flight | 9 |
| In-flight announcement | 22 |
| In-flight announcement nos. | 27 |
| In-flight announcement, briefly | 31 |
| In-flight announcement, for short | 33 |
| In-flight announcements | 23 |
| In-flight announcements, for short | 34 |
| In-flight approx. | 17 |
| In-flight attendant | 19 |
| In-flight beverage? | 19 |
| In-flight calling aid | 21 |
| In-flight calls? | 16 |
| In-flight catalog with an "upside-down tomato garden" | 63 |
| In-flight details, for short | 28 |
| In-flight display no. | 21 |
| In-flight entertainment, for short | 34 |
| In-flight estimates, for short | 30 |
| In-flight fig. | 14 |
| In-flight figs. | 15 |
| In-flight guesstimate | 21 |
| In-flight guesstimate, for short | 32 |
| In-flight info | 14 |
| In-flight info, for short | 25 |
| In-flight info, in brief | 24 |
| In-flight info: Abbr. | 21 |
| In-flight magazine for Delta | 28 |
| In-flight no. | 13 |
| In-flight P.A. announcement | 27 |
| In-flight rarity | 16 |
| In-flight stat | 14 |
| In-flight work stations | 23 |
| In-group | 8 |
| In-group lingo | 14 |
| In-group of yore | 16 |
| In-group outcast | 16 |
| In-group outcasts | 17 |
| In-group's secrets | 22 |
| In-groups | 9 |
| In-home accommodations | 22 |
| In-house computer linkup, briefly | 33 |
| In-house data-sharing syst. | 27 |
| In-house debugging | 18 |
| In-house doctor? | 16 |
| In-house publication | 20 |
| In-land connection | 18 |
| In-land link? | 13 |
| In-law of Esau | 14 |
| In-law of Ruth | 14 |
| In-law to a Lincoln | 19 |
| In-laws of the Mullenses | 24 |
| In-line item | 12 |
| In-line pickup? | 15 |
| In-line skate maneuver | 22 |