| 100% | PSEUD | 5 | Add an "o" and fake it? |
| 58% | HOLA | 4 | Greeting that becomes another greeting if you add an A at the front and reverse it |
| 51% | OPOSSUM | 7 | Add an O to an Aussie marsupial to get a US one |
| 48% | GAMIFY | 6 | Add rules and scoring to an activity |
| 48% | GLOSS | 5 | It adds shine to lips and photos |
| 48% | TIDE | 4 | An almanac lists its highs and lows |
| 47% | LOVENOTE | 8 | It has its X's and O's |
| 47% | MEAL | 4 | It might include an appetizer, entrée, and dessert |
| 47% | SACKLUNCH | 9 | It might contain a sandwich and an apple |
| 47% | CAB | 3 | It's got a meter and an odometer |
| 46% | LEAPYEAR | 8 | It adds an extra day in February: 2 wds. |
| 46% | EYE | 3 | It has an iris, a cornea, and a pupil |
| 46% | NOTE | 4 | It may have many X's and O's |
| 46% | SIGNIN | 6 | __ details, typically an email add and password |
| 46% | YEA | 3 | "Aye" equivalent, and an anagram of it |
| 46% | LIVIA | 5 | Woman's name that becomes another woman's name by adding an O to the start |
| 45% | SELFREFERENTIAL | 15 | It is what it is, and an alternate puzzle title |
| 45% | UMAMI | 5 | It was added to create an everyday quintet in 1990 |
| 45% | YEA | 3 | It's both a synonym and an anagram of "aye" |
| 45% | SEA | 3 | It's between a lake and an ocean in size |
| 45% | ERG | 3 | Unit of work that becomes a word meaning "thus" if you add an O to the end |
| 44% | DID | 3 | "They said 'Babe, you gotta fake it till you make it' and I ___" |
| 44% | EAGLE | 5 | It clutches arrows and an olive branch on the Great Seal |
| 44% | NEEDLE | 6 | It has an eye and sharp point |
| 43% | PIP | 3 | What an O resembles after you shade it in (as you should 21 times) |
| 43% | MOTORHEAD | 9 | "Ace of Spades" band with a "metal umlaut" over an O in its name |
| 43% | STATE | 5 | It goes between the city and zip code in an American address |
| 43% | THIOL | 5 | Compound added to natural gas to give it an odor |
| 43% | ERIEPA | 6 | It lies between Cleveland, O., and Buffalo, N.Y. |
| 42% | DELI | 4 | Adding “sh” to its end forms an adjective that might describe its offerings |