| 100% | ISUP | 4 | "I don't know which end ___": 2 wds. |
| 69% | SPAREME | 7 | "___ the details! I don't want to know!": 2 wds. |
| 67% | WHYNOT | 6 | "Sure, I don't know any reason to avoid it": 2 wds. |
| 65% | BYNOW | 5 | "If You Don't Know Me ___" (Simply Red hit): 2 wds. |
| 63% | ALOT | 4 | "There's ___ you don't know about me": 2 wds. |
| 63% | ALOT | 4 | "___ of people don't know this about me": 2 wds. |
| 61% | ORA | 3 | "I don't know if it's a blessing ___ curse": 2 wds. |
| 59% | ASA | 3 | "___ rule, I don't allow it ...": 2 wds. |
| 57% | BYNOW | 5 | "If You Don't Know Me ___" (Harold Melvin & the Blue Notes song) (2 wds.) |
| 55% | OHI | 3 | "___ don't know about that": 2 wds. |
| 51% | SPAREME | 7 | "Don't bother explaining, I don't want to hear it": 2 wds. |
| 50% | WEMET | 5 | "Haven't ___ before?" ("Don't I know you?") (2 wds.) |
| 50% | THIRD | 5 | I Don't Know's base |
| 49% | IDK | 3 | I don't know, in text speak |
| 49% | OHHI | 4 | "___! I didn't know you were coming." (surprised greeting): 2 wds. |
| 49% | UMNO | 4 | "Yeah, I don't think so" (2 wds.) |
| 49% | UMNO | 4 | "Uh, I don't think so" (2 wds.) |
| 48% | ANY | 3 | I don't mind which! |
| 48% | IKNOW | 5 | "You don't need to tell me": 2 wds. |
| 48% | IKNOW | 5 | "You don't have to remind me" (2 wds.) |
| 48% | WEREEVEN | 8 | "Now you don't owe me anything" (2 wds.) |
| 48% | GEE | 3 | "Hmm, I don't know!" |
| 48% | GEE | 3 | "Oh, I don't know" |
| 48% | GEE | 3 | "Hmm, I don't know" |
| 47% | OKOK | 4 | "You don't have to keep reminding me!" (2 wds.) |
| 47% | ACLUE | 5 | "I don't have ___!" ("Beats me!"): 2 wds. |
| 47% | JASONALDEAN | 11 | Country singer whose album "They Don't Know" topped the Billboard 200 in 2016: 2 wds. |
| 47% | ISAW | 4 | "You don't have to tell me about it" (2 wds.) |
| 46% | ORYOU | 5 | "... either know it ___ don't" (2 wds.) |
| 46% | ALLMINE | 7 | "I don't want to share!" (2 wds.) |