Subcategories:
You can see the full category hierarchy on the Category Map.
| 
 | 
 | 
| 4 beginning with A | AFAIK ASAP ASAP (2) AWOL | 
| 1 beginning with B | BTW | 
| 3 beginning with F | FWIW FWIW (2) FYI | 
| 1 beginning with I | IMHO | 
| 4 beginning with L | LMAO LOL LOL (2) LOL (3) | 
| 1 beginning with P | PDQ | 
| 5 beginning with R | ROFL ROFL (2) ROFL (3) ROFL (4) RTFM | 
| 1 beginning with XYZ | YASA | 
| 20 apronyms in total | |