| 100% | PHD | 3 | Academic degree that generally requires a dissertation: Abbr. |
| 70% | PHD | 3 | Academic degree that typically requires a thesis: Abbr. |
| 67% | PHD | 3 | Degree that typically requires a written dissertation: Abbr. |
| 65% | PHD | 3 | Advanced degree that may require a dissertation defense: Abbr. |
| 57% | PHD | 3 | Degree that typically requires a thesis: Abbr. |
| 56% | PHD | 3 | Academic degree that follows a masters: Abbr. |
| 54% | PHD | 3 | Highest academic degree that a university can award: Abbr. |
| 53% | PHDS | 4 | Advanced degrees requiring a dissertation: Abbr. |
| 44% | PHDS | 4 | Degrees that require dissertation defenses |
| 44% | PHD | 3 | Academic degree higher than a Master's: Abbr. |
| 44% | PHD | 3 | Academic degree for a professor: Abbr. |
| 43% | MBA | 3 | Academic degree for a future executive: Abbr. |
| 43% | PHD | 3 | Degree that often follows a master's: Abbr. |
| 43% | PHD | 3 | Degree that may follow a master's: Abbr. |
| 42% | PHD | 3 | Degree earned after defending a dissertation: Abbr. |
| 41% | LITD | 4 | Academic degree equal to a Ph.D. in some countries: Abbr. |
| 39% | ATM | 3 | Device that requires a PIN: Abbr. |
| 38% | PHD | 3 | Academic degree after an M.A., perhaps: Abbr. |
| 38% | DUI | 3 | Traffic charge that might require a breathalyzer test: Abbr. |
| 38% | ATM | 3 | Dollar dispenser that requires a PIN: Abbr. |
| 38% | ATM | 3 | Cash dispenser that requires a PIN: Abbr. |
| 38% | ATM | 3 | Banking contraption that requires a PIN: Abbr. |
| 38% | ATM | 3 | Public machine that requires a PIN: Abbr. |
| 38% | ATMS | 4 | Money dispensers that require a PIN: Abbr. |
| 38% | ATMS | 4 | Dollar dispensers that require a PIN: Abbr. |
| 35% | PHD | 3 | Degree that someone might earn after an M.S. or M.A.: Abbr. |
| 35% | MRI | 3 | Hospital scan that requires lying in a tube: Abbr. |
| 34% | OTC | 3 | Like medications that don't require a prescription: Abbr. |
| 34% | STOL | 4 | Abbr. for a plane that doesn't require much runway (but needs plenty of space if it goes backwards!) |
| 34% | PHD | 3 | Degree that Mayim Bialik earned in neuroscience: Abbr. |