| Activity of most puzzle constructors | 36 |
| Activity of one who's paper-trained? | 40 |
| Activity of oysters? | 20 |
| Activity of some cloning labs | 29 |
| Activity of some demons | 23 |
| Activity of some divers | 23 |
| Activity of some ghosts | 23 |
| Activity of the Sirens | 22 |
| Activity on a boardwalk | 23 |
| Activity on a court | 19 |
| Activity on a kid's place mat | 33 |
| Activity on a mat | 17 |
| Activity on a placemat | 22 |
| Activity on a range | 19 |
| Activity on a strip | 19 |
| Activity on Dec. 31 | 19 |
| Activity on eBay | 16 |
| Activity on horseback | 21 |
| Activity on Inauguration Day | 28 |
| Activity on NBA highlight reels | 31 |
| Activity on Qom courses? | 24 |
| Activity on Yom Kippur | 22 |
| Activity portrayed in 2013's "Gravity" | 52 |
| Activity preceding liftoff | 26 |
| Activity requiring four bishops | 31 |
| Activity requiring three walls | 30 |
| Activity resulting in a net gain? | 33 |
| Activity studied in onomastics | 30 |
| Activity suggested by this puzzle's theme entries | 53 |
| Activity that can wreck a hard disk | 35 |
| Activity that can wreck a hard disk? | 36 |
| Activity that destroys a hard disk | 34 |
| Activity that destroys a hard disk? | 35 |
| Activity that improves the well-being of canines | 48 |
| Activity that in five years you're going to be embarrassed you were so into today | 85 |
| Activity that includes knocking | 31 |
| Activity that includes roundhouse kicks | 39 |
| Activity that involves seeing people? | 37 |
| Activity that may include flowers and candy | 43 |
| Activity that may put you over a barrel | 39 |
| Activity that may require a lift | 32 |
| Activity that proceeds hand to hand? | 36 |
| Activity that requires powder on the face? | 42 |
| Activity that's not without interest | 40 |
| Activity with a downward-facing dog | 35 |
| Activity with a list | 20 |
| Activity with bubbles | 21 |
| Activity with chops and kicks | 29 |
| Activity with dolls | 19 |
| Activity with flags | 19 |
| Activity with holding and throwing | 34 |
| Activity with positions | 23 |
| Activity with quite a drawing | 29 |
| Activity with traps | 19 |
| Activity-filled | 15 |
| Activity-filled summer getaway places | 37 |
| Actor | 5 |
| Actor (1934), actor (1995) | 26 |
| Actor (and crossword fan) Matthew | 33 |
| Actor (WWII combat pilot) | 25 |
| Actor -- Gossett Jr. | 20 |
| Actor -- Ivory Wayans | 21 |
| Actor -- Joel Osment | 20 |
| Actor -- Julia | 14 |
| Actor -- Rhames | 15 |
| Actor -- William Scott | 22 |
| Actor -- Zimbalist Jr. | 22 |
| Actor Abe | 9 |
| Actor Ackroyd | 13 |
| Actor activator | 15 |
| Actor Adler | 11 |
| Actor Adrian on "T.J. Hooker" | 39 |
| Actor Affleck | 13 |
| Actor Aherne | 12 |
| Actor Aiello | 12 |
| Actor Alain | 11 |
| Actor Alain ___ | 15 |
| Actor Alain ____ | 16 |
| Actor Alan | 10 |
| Actor Alan and family | 21 |
| Actor Alan Cumming, by birth | 28 |
| Actor Alan from Allestree | 25 |
| Actor Alan from N.Y.C. | 22 |
| Actor Alan of ''Gilligan's Island'' | 55 |
| Actor Alan of "Hope & Gloria" | 43 |
| Actor Alan of "MASH" | 30 |
| Actor Alan of "The Change-Up" | 39 |
| Actor Alan of "The In-Laws" | 37 |
| Actor Alan or Adam | 18 |
| Actor Alan or Robert | 20 |
| Actor Alan's college? | 25 |
| Actor Alan: 1913–64 | 26 |
| Actor Alastair | 14 |
| Actor Alastair of "A Christmas Carol" | 47 |
| Actor Alastair ___ | 18 |
| Actor Albert | 12 |
| Actor Alda | 10 |
| Actor Aldridge of 1800's | 28 |
| Actor Alejandro | 15 |
| Actor Alex | 10 |