| Seconds in command | 18 |
| Seconds in the air, to punters | 30 |
| Seconds on a watch | 18 |
| Seconds on TV? | 14 |
| Seconds participate in them | 27 |
| Seconds, at a meal | 18 |
| Seconds, at dinner | 18 |
| Seconds, at the table | 21 |
| Seconds, e.g. | 13 |
| Seconds, in boxing | 18 |
| Seconds, of a sort | 18 |
| Seconds, of a sort, for a ruminant | 34 |
| Seconds, say | 12 |
| Seconds, sometimes | 18 |
| Seconds: Abbr. | 14 |
| Seconds? | 8 |
| Secque or brogue | 16 |
| Secque or sollaret | 18 |
| Secrecy | 7 |
| Secrecy breach | 14 |
| Secrecy fabric? | 15 |
| Secrecy fiat | 12 |
| Secrecy medium | 14 |
| Secrecy metaphor | 16 |
| Secrecy metaphors | 17 |
| Secrecy problem | 15 |
| Secrecy thwarter | 16 |
| Secrecy, so to speak | 20 |
| Secrecy, with "the" | 29 |
| Secrest's ''American Top 40'' predecessor | 61 |
| Secret | 6 |
| Secret '40s org. | 20 |
| Secret (and potentially cataclysmic) substance in Kurt Vonnegut's "Cat's Cradle" | 98 |
| Secret add-on | 13 |
| Secret advantage | 16 |
| Secret advisers | 15 |
| Secret affairs | 14 |
| Secret agcy. | 12 |
| Secret agent | 12 |
| Secret agent created by a 1938 Pulitzer winner | 46 |
| Secret agent created by John P. Marquand | 40 |
| Secret agent disguised as a clergyman? | 38 |
| Secret agent Leamas in "The Spy Who Came In From the Cold" | 68 |
| Secret agent Matt | 17 |
| Secret agent TV show of the '60s | 36 |
| Secret agent's need | 23 |
| Secret agents | 13 |
| Secret alternative | 18 |
| Secret and foreign | 18 |
| Secret area of anatomy? | 23 |
| Secret associates | 17 |
| Secret attachment, for short | 28 |
| Secret business associate | 25 |
| Secret challenger? | 18 |
| Secret Chinese society | 22 |
| Secret Chinese society, in the U.S. | 35 |
| Secret circle parts? | 20 |
| Secret code, in the secret code | 31 |
| Secret collaborator | 19 |
| Secret collector | 16 |
| Secret communication location | 29 |
| Secret communications | 21 |
| Secret competitor | 17 |
| Secret cooperation | 18 |
| Secret couple, in gossip | 24 |
| Secret couple, to Barrett | 25 |
| Secret court | 12 |
| Secret D.C. group | 17 |
| Secret decoder ring?: Abbr. | 28 |
| Secret deposits | 15 |
| Secret devices | 14 |
| Secret diet-breakers | 20 |
| Secret dish in "Sweeney Todd" | 39 |
| Secret doctrine | 15 |
| Secret doctrines | 16 |
| Secret employer, maybe | 22 |
| Secret encounter | 16 |
| Secret ending | 13 |
| Secret ending? | 14 |
| Secret engagement | 17 |
| Secret entrances under carpets, perhaps | 39 |
| Secret event of '45 | 23 |
| Secret exit, maybe | 18 |
| Secret exit, perhaps | 20 |
| Secret explosions | 17 |
| Secret file | 11 |
| Secret finish | 13 |
| Secret follower | 15 |
| Secret for some | 15 |
| Secret for some superheroes | 27 |
| Secret formula for making fasteners? | 36 |
| Secret fraternity | 17 |
| Secret front? | 13 |
| Secret get-together | 19 |
| Secret get-together, or what occurs literally in each of this puzzle's circled squares | 90 |
| Secret get-togethers | 20 |
| Secret governing groups | 23 |
| Secret govt. group | 18 |
| Secret group | 12 |
| Secret grp. since 1947 | 22 |