| Sub ____ (secretly) | 19 |
| Sub ____: secretly | 18 |
| Sub _____ | 9 |
| Sub's "ears" | 26 |
| Sub's base? | 15 |
| Sub's cousin | 16 |
| Sub's ears | 14 |
| Sub's eye, for short | 24 |
| Sub's gauge? | 16 |
| Sub's goal | 14 |
| Sub's milieu | 16 |
| Sub's navigational aid | 26 |
| Sub's nemesis | 17 |
| Sub's nemesis in W.W. II | 28 |
| Sub's opposite | 18 |
| Sub's opposite, in a dungeon | 32 |
| Sub's opposite, in BDSM | 27 |
| Sub's spot | 14 |
| Sub's tracking device | 25 |
| Sub's weapon | 16 |
| Sub's weapon, perhaps | 25 |
| Sub's weapon: Abbr. | 23 |
| Sub, perhaps | 12 |
| Sub-chaser's device | 23 |
| Sub-chaser's need | 21 |
| Sub-conscious sensor? | 21 |
| Sub-detection apparatus | 23 |
| Sub-finding device | 18 |
| Sub-freezing temps | 18 |
| Sub-gum ingredient | 18 |
| Sub-hurricane wind | 18 |
| Sub-rosa date | 13 |
| Sub-rosa deals | 14 |
| Sub-rosa info | 13 |
| Sub-Saharan hunter | 18 |
| Sub-Saharan menace | 18 |
| Sub-Saharan pest | 16 |
| Sub-Saharan pests | 17 |
| Sub-Saharan scourge | 19 |
| Sub-Saharan staple | 18 |
| Sub-Saharan tormentors | 22 |
| Sub-shop blaze? | 15 |
| Sub-sub-players | 15 |
| Sub-teen swinger | 16 |
| Sub-tracking device | 19 |
| Sub-unit of a foot | 18 |
| Sub-zero exclamation | 20 |
| Sub-___ Africa | 14 |
| Sub. detector | 13 |
| Sub. for omitted names | 22 |
| Subadolescent | 13 |
| Subaltern | 9 |
| Subantarctic waddler | 20 |
| Subarctic ecosystem | 19 |
| Subarctic evergreen forest | 26 |
| Subarctic evergreen forests | 27 |
| Subarctic forest | 16 |
| Subarctic forests | 17 |
| Subaru CPU? | 11 |
| Subaru Impreza, e.g. | 20 |
| Subaru models | 13 |
| Subaru SUV named after a section of NYC | 39 |
| Subatomic bit | 13 |
| Subatomic bit (after the heist) | 31 |
| Subatomic particle | 18 |
| Subatomic particle composed of one quark and one antiquark | 58 |
| Subatomic particle in a collider | 32 |
| Subatomic particle made of three quarks | 39 |
| Subatomic particle more massive than an electron | 48 |
| Subatomic particle that is a nuclear binder | 43 |
| Subatomic particle thought to bind quarks together | 50 |
| Subatomic particle with a negative charge | 41 |
| Subatomic particle with no electric charge | 42 |
| Subatomic particles | 19 |
| Subbed | 6 |
| Subbed (for) | 12 |
| Subbed for Mehta | 16 |
| Subbed with the band | 20 |
| Subbed, in a way | 16 |
| Subclass of fishes | 18 |
| Subcompact | 10 |
| Subcompact 1980s car | 20 |
| Subcompact Chevy of the 1970s | 29 |
| Subcompact from Chevrolet | 25 |
| Subcompact from Chevy | 21 |
| Subcompact introduced in model year 1976 | 40 |
| Subcompact that debuted in 1975 | 31 |
| Subcompact's smaller kin | 28 |
| Subconsciouses | 14 |
| Subcontinent | 12 |
| Subcontinent language | 21 |
| Subcontinent people | 19 |
| Subcontinent princess | 21 |
| Subcontinental lute | 19 |
| Subcontinental megastar Aishwarya | 33 |
| Subcontinental nation | 21 |
| Subcontinental potentate | 24 |
| Subcontinental prefix | 21 |
| Subcontinental princesses | 25 |
| Subcontinental royal (Var.) | 27 |