| Duplicating machine | 19 |
| Duplicating device | 18 |
| Duplicating aid | 15 |
| Duplicates, for short | 21 |
| Duplicates, briefly | 19 |
| Duplicates exactly | 18 |
| Duplicates | 10 |
| Duplicated, in a way | 20 |
| Duplicated real estate listing? | 31 |
| Duplicated genetically | 22 |
| Duplicated in a way | 20 |
| Duplicated | 10 |
| Duplicate, in a way | 19 |
| Duplicate, for short | 20 |
| Duplicate, briefly | 18 |
| Duplicate, as a Civil War battle | 32 |
| Duplicate the duplicate | 23 |
| Duplicate specimen, in biology | 30 |
| Duplicate part | 14 |
| Duplicate of a sort | 19 |
| Duplicate events | 16 |
| Duplicate event | 15 |
| Duplicate door device | 21 |
| Duplicate coup | 14 |
| Duplicate copy | 14 |
| Duplicate a duplicate | 21 |
| Duplicate | 9 |
| Duplex feature | 14 |
| Duplex duo | 10 |
| Duplex descriptor | 17 |
| Duplex apartment | 16 |
| Duplex | 6 |
| Duple-time dance | 16 |
| Dupin's nom de plume | 24 |
| Dupin's creator | 19 |
| Dupicate | 8 |
| Dupes in some mailboxes | 23 |
| Dupes in some in-boxes | 22 |
| Dupes | 5 |
| Dupery | 6 |
| Dupers | 6 |
| Duped? | 6 |
| Duped twin | 10 |
| Duped person | 12 |
| Duped one | 9 |
| Duped group | 11 |
| Duped | 5 |
| Dupe, with "in" | 25 |
| Dupe's undoing | 18 |
| Dupe's shout | 16 |
| Dupe's exclamation | 22 |
| Dupe's diamond | 18 |
| Dupe Thomas? | 12 |
| Dupe some wedding officiants? | 29 |
| Dupe on a train? | 16 |
| Dupe of Jacob | 13 |
| Dupe into danger | 16 |
| Dupe in an Aesop fable | 22 |
| Dupe at the bar? | 16 |
| Dupe | 4 |
| Dup.'s progenitor | 21 |
| Duos: Abbr. | 11 |
| Duos, dynamic or not | 20 |
| Duos times four | 15 |
| Duos | 4 |
| Duomo statue in Firenze | 23 |
| Duodenal woe | 12 |
| Duodecim | 8 |
| Duo- quintupled | 15 |
| Duo, a Filipino? | 16 |
| Duo's word | 14 |
| Duo x 4 | 7 |
| Duo with the 2003 hit "All the Things She Said" | 57 |
| Duo with the 1985 hit "Shout" (and a hint to this puzzle's theme) | 79 |
| Duo with Orlando | 16 |
| Duo with a third wheel | 22 |
| Duo whose father and grandfather also had #1 hits | 49 |
| Duo times four | 14 |
| Duo that might review films based on arcade games? | 50 |
| Duo that had a hit with "Unforgettable" | 49 |
| Duo that debuted in "The Talking Magpies" | 51 |
| Duo quadrupled | 14 |
| Duo plus one | 12 |
| Duo of a children's rhyme | 29 |
| Duo noted for DNA research | 26 |
| Duo in the news | 15 |
| Duo in mayonnaise | 17 |
| Duo in a typical symphony | 25 |
| Duo in a score | 14 |
| Duo in a nonet | 14 |
| Duo in a disagreeable decision | 30 |
| Duo in "Rio Rita" | 27 |
| Duo in "Merchant of Venice" | 37 |
| Duo in "Manon" | 24 |
| Duo from "The Lion King" | 34 |
| Duo for de Havilland | 20 |
| Duo first seen in "Puss Gets the Boot," 1940 | 54 |
| Duo directed by dad, in Massachusetts? | 38 |
| Duo behind "Is Dave there?" "[spin spin spin]"? | 67 |
| Duo before king | 15 |