| 100% | BESTSELLER | 10 | Wildly popular book |
| 60% | HOWTO | 5 | Popular book genre |
| 60% | ROMAN | 5 | Popular book font |
| 59% | MYTH | 4 | Wildly popular fictional tale |
| 59% | BARTLETTS | 9 | Popular book of quotations |
| 56% | TWILIGHT | 8 | Popular book series by Stephenie Meyer |
| 52% | WOE | 3 | With 37-Down, popular book on grammar |
| 52% | ARCHIE | 6 | Popular comic book since 1942 |
| 52% | TINTIN | 6 | Popular European comic book hero |
| 51% | EAT | 3 | ___, Pray, Love; a popular book by Elizabeth Gilbert |
| 51% | EATS | 4 | "___, Shoots And Leaves," a popular book on punctuation |
| 50% | DAHL | 4 | Popular children's book writer Roald |
| 50% | AIRBNB | 6 | Popular site for booking vacation lodging |
| 50% | MADLIBS | 7 | Perennially popular game books |
| 49% | ISPY | 4 | Popular children's "find it" book series |
| 48% | ISPY | 4 | Popular children's book series with hidden objects |
| 48% | COSMOS | 6 | Popular 1980 Carl Sagan book about the universe |
| 46% | DRSEUSS | 7 | US writer, author of popular children books |
| 45% | NODDY | 5 | Popular children's book series by English author Enid Blyton |
| 45% | ASTERIX | 7 | Internationally popular French comic book series since 1959 |
| 41% | WHERESWALDO | 11 | Popular children's book series ... whose protagonist is "hiding" in the circled letters |
| 41% | STAN | 4 | ___ Lee, popular Marvel comic book writer who passed away in 2018 |
| 40% | BABAR | 5 | "Histoire de ___," first in a popular series of children's books |
| 37% | IDIOTS | 6 | "The Complete ___ Guide to ..." (popular book series) |
| 36% | MAO | 3 | Author of a once-popular book of quotations |
| 35% | DUMMIES | 7 | "For ___" (popular how-to book series) |
| 34% | NOAH | 4 | The most popular male baby name of 2014, or a man in the Book of Genesis |
| 33% | JOHN | 4 | Good Book book |
| 33% | ONEL | 4 | Scott Turow book |
| 33% | HOSEA | 5 | Old Testament book |