| 100% | AMSO | 4 | "I know not why I ___ sad": Shak. |
| 80% | AMSO | 4 | “In sooth, I know not why I ___ sad”: opening of “The Merchant of Venice” |
| 57% | YON | 3 | "___ light is not daylight, I know it": Shak. |
| 46% | FROGINMYTHROAT | 14 | Why I'm not singing today |
| 46% | AHA | 3 | "Now I know why!" |
| 44% | ANGELOU | 7 | I Know Why the Caged Bird Sings, poet Maya __ |
| 44% | UNTO | 4 | "___ Me? I do not know you": Emily Dickinson |
| 43% | UNTO | 4 | "'___ Me?' I do not know you" (Emily Dickinson poem) |
| 43% | ALAS | 4 | "__, I am not coop'd here for defence!": Shak. |
| 43% | TMI | 3 | "That's not something I needed to know" |
| 43% | TMI | 3 | "Jeez, I did NOT need to know that!" |
| 43% | TMI | 3 | "Yeah . . . I did not need to know that" |
| 42% | EER | 3 | "I do not see why I should ___ turn back": Frost |
| 42% | EER | 3 | "I do not see why I should __ turn back": Frost |
| 42% | ANGELOU | 7 | Writer of I Know Why the Caged Bird Sings |
| 42% | TMI | 3 | "Eww, I did not need to know that!": Abbr. |
| 42% | ENEMY | 5 | You know me well but I'm not your friend |
| 42% | ANGELOU | 7 | Maya, author of I Know Why the Caged Bird Sings |
| 42% | ANGELOU | 7 | Maya, she wrote I Know Why the Caged Bird Sings |
| 41% | SHOULDAGUESSED | 14 | "Stupid of me not to know" |
| 41% | DOH | 3 | "How did I not know that?!?" |
| 41% | DOH | 3 | "How did I not know that?!" |
| 41% | YAO | 3 | Ming who does not make vases, as far as I know |
| 40% | YOUTELLME | 9 | “Why would I know?” |
| 40% | WOULD | 5 | "Why __ I know that?" |
| 40% | CAP | 3 | (5/6) "On my way out, I saw a ___ and bought that too. You know, just in case it gets too sunny, and also, why not?" |
| 39% | FRODO | 5 | "I will take the Ring to Mordor, though I do not know the way" speaker |
| 38% | OFT | 3 | "Here hung those lips that I have kiss'd I know not how ___": Hamlet |
| 38% | SEE | 3 | "I can't ___ why not!" |
| 38% | SEE | 3 | "I don't ___ why not!" |