| Abbreviation | Definition |
|---|---|
| IDNKT | I Did Not Know That |
| IDNO | In Desperate Need Of |
| IDPA | I Don't Practice Anymore |
| IDR | I Don't Read |
| IDRC | I Don't Really Care |
| IDRK | I Don't Really Know |
| IDRWT | I Dont Really Wanna Talk |
| IDRWT | I Don't Really Wanna Talk |
| IDSA | I Designed Something Awful |
| IDSO | In Desperate Search Of |
| IDT | I Don't Try |
| IDTS | I Don't Think So |
| IDTWY | I Don't F*** WithYou |
| IDTYGI | I Don't Think You Get It |
| IDU | I Don't Understand |
| IDUY | Don't Understand You |
| IDUY | I Don't Understand Why |
| IDUY | I Don't Understand You |
| IDW2 | I Don't Want To |
| IDWIMIE | It Doesn't Work In Microsoft Internet Explorer |