| Sierra Nevada lake | 18 |
| Sierra Nevada evergreen | 23 |
| Sierra Nevada competitor | 24 |
| Sierra Nevada brew | 18 |
| Sierra Nevada attraction | 24 |
| Sierra Mist flavor | 18 |
| Sierra Mist alternative | 23 |
| Sierra manufacturer | 19 |
| Sierra maker | 12 |
| Sierra Maestra country | 22 |
| Sierra Madres resort | 20 |
| Sierra Madre valley | 19 |
| Sierra Madre treasure | 21 |
| Sierra Madre resort city | 24 |
| Sierra Madre ore stratum | 24 |
| Sierra Leone native | 19 |
| Sierra Leone island | 19 |
| Sierra gold | 11 |
| Sierra follower, in the NATO alphabet | 37 |
| Sierra follower, in code | 24 |
| Sierra follower | 15 |
| Sierra del ___, Argentina | 25 |
| Sierra Club's first president | 33 |
| Sierra Club subj. | 17 |
| Sierra Club outing | 18 |
| Sierra Club founder John et al. | 31 |
| Sierra Club founder John | 24 |
| Sierra Club founder | 19 |
| Sierra Club e.g. | 16 |
| Sierra Club concern: Abbr. | 26 |
| Sierra Club cofounder John | 26 |
| Sierra Club cofounder | 21 |
| Sierra Club co-founder | 22 |
| Sierra --- | 10 |
| Sierra -- (California range) | 28 |
| Sierra -- | 9 |
| Sierra (Mexican mountains) | 26 |
| Siepi, Hines et al. | 19 |
| Siepi, e.g. | 11 |
| Siepi of opera | 14 |
| Siepi et al. | 12 |
| Siepi and Hines | 15 |
| Sienna or offering | 18 |
| Sienna brown | 12 |
| Sienna | 6 |
| Sienkiewicz's "Quo ___?" | 38 |
| Siena's Palio is one | 24 |
| Siena's home | 16 |
| Siena sweetie | 13 |
| Siena seven | 11 |
| Siena resident | 14 |
| Siemens, once | 13 |
| Siemens predecessor | 19 |
| Siegmund-Sieglinde number | 25 |
| Siegmeister or Wiesel | 21 |
| Sieging weapon | 14 |
| Siegfried's slayer | 22 |
| Siegfried's partner | 23 |
| Siegfried's killer | 22 |
| Siegfried's horse | 21 |
| Siegfried's compadre | 24 |
| Siegfried Line of 1930's Germany | 36 |
| Siegfried and Sigmund's story, e.g. | 39 |
| Siegfried and Roy | 17 |
| Siegel and Coen | 15 |
| Siege weapon | 12 |
| Siege site: 1836 | 16 |
| Siege site of A.D. 72 | 21 |
| Siege site of 1936-39 | 21 |
| Siege site of 1836 | 18 |
| Siege site of 1428 | 18 |
| Siege site for Santa Anna | 25 |
| Siege site | 10 |
| Siege raised by Joan of Arc | 27 |
| Siege Perilous site | 19 |
| Siege of ___ (opening of the Third Crusade) | 43 |
| Siege of Troy hero | 18 |
| Siege of Troy epic | 18 |
| Siege of Leningrad river | 24 |
| Siege deterrents | 16 |
| Siege catapault | 15 |
| Siege | 5 |
| Siebzehn minus vierzehn | 23 |
| Sieben und eins | 15 |
| Sieben seventh | 14 |
| Sieben follower | 15 |
| Sidon's neighbor | 20 |
| Sidon's colony: 15th-century B.C. | 37 |
| Sidney who died in 2011 | 23 |
| Sidney Smith's creations | 28 |
| Sidney Sheldon TV series | 24 |
| Sidney portrayer in "Scream" | 38 |
| Sidney Poitier, e.g. | 20 |
| Sidney Poitier title role | 25 |
| Sidney Poitier role | 19 |
| Sidney Poitier film of '61 | 30 |
| Sidney Poitier character | 24 |
| Sidney of films | 15 |
| Sidney of film | 14 |
| Sidney of basketball | 20 |