| Abbreviation | Definition |
|---|---|
| ITT | In This Thread |
| ITTO | Is This Thing On? |
| ITTT | Is That The Truth? |
| ITTYL | I Talk To You Later |
| ITTYL | I'll talk to you later |
| ITY | I trust you |
| ITYFTS | I Think You'll Find it The Same |
| ITYK | I Thought You Knew |
| ITYM | I'm Telling Your Mother |
| ITYS | I Think You Stink |
| ITYS | I Told You So |
| IUCS | If U Care Share |
| IUDM | If You Don't Mind |
| IUP | I'm Usually Partying |
| IUSS | If You Say So |
| IUTY | Its Up To You |
| IVL | In virtual life (online) |
| IVO | I'm Very Old |
| IVO | In the Vicinity Of |
| IWALY | I Will Always Love You |