| Abbreviation | Definition |
|---|---|
| NOS | Narrow Over the Shoulders |
| NP | Non Proportional |
| NS | No Skirt |
| NULL | Nation Under Lethal Limitations |
| NUTS | Never Underestimate This Style |
| NY | Nylon |
| NYFW | New York Fashion Week |
| O&M | Original Equipment Manufacturer |
| OBA | Optical Brightening Agent |
| OC | Old Clothes |
| OFS | Our Finest Selection |
| OFT | Odor Fighting Technology |
| OJ | Office Jumpsuit |
| OMG | Only My Green |
| OOTD | Obsessions Of The Damsel |
| OOTD | Outfit Of The Day |
| OOTH | Outfit Of The Hour |
| OP | Ocean Pacific |
| OP | One Piece |
| OPC | Other Peoples' Clothes |