| 100% | OHTHAT | 6 | "Ah, I didn't know what you were referring to" |
| 55% | IVE | 3 | "You don't know what ___ been through" ("Be nice to me") |
| 51% | OHHI | 4 | "___! I didn't know you were coming." (surprised greeting): 2 wds. |
| 50% | OHTHAT | 6 | "Ah, I get what you're referring to now" |
| 49% | OHHI | 4 | "I didn't know you'd be here!" |
| 49% | XXXXX | 5 | "I didn't know you'd be here!" |
| 48% | OHHI | 4 | "I didn't know you'd be here!" (2 wds.) |
| 46% | ELSE | 4 | "I don't know what ___ to tell you" |
| 46% | OURS | 4 | What things belonging to you and me are |
| 46% | ARE | 3 | "I know you ___ but what am I?" |
| 46% | ARE | 3 | "I know you ___, but what am I?" |
| 46% | BASELESS | 8 | What the G.I. didn't want to be? |
| 45% | NICETRY | 7 | “I know what you’re up to” |
| 45% | BEE | 3 | "I Know I Am, But What Are You?" writer Samantha |
| 45% | LETMEGUESS | 10 | "I bet I know what you're going to say" |
| 44% | TMI | 3 | I didn't need to know that, in modern lingo |
| 44% | TMI | 3 | "OMG! I didn't want to know that!" |
| 44% | TMI | 3 | "Eww, I didn't need to know that" |
| 44% | TMI | 3 | "Eww! I didn't need to know that!" |
| 44% | TMI | 3 | "OMG, I didn't need to know that!" |
| 44% | OHO | 3 | "I know what you're up to!" |
| 43% | TMI | 3 | "Ewww ... I didn't need to know that!": Abbr. |
| 43% | CAMO | 4 | What you don't want to be spotted in |
| 43% | LIE | 3 | What you wouldn't want to be called on |
| 43% | FIB | 3 | "I didn't know I was speeding, officer," e.g. |
| 43% | SOLVE | 5 | What you are trying to do |
| 42% | TMI | 3 | "Yeah, I didn't need to know that ...," in texts: Abbr. |
| 42% | BEAUTIFUL | 9 | What you are, according to James Blunt |
| 42% | BEE | 3 | Comedian Samantha who wrote the memoir "I Know I Am, But What Are You?" |
| 42% | SAMANTHABEE | 11 | Comedian who wrote "Cracking Up" and "I Know I Am, but What Are You?" |