Shipping threat of the past Set down Sexually fulfilled Spread out, as plaster Set Set (down) Subsurface war vessel Set down Sinker of the Lusitania Set, as a trap Sea craft. Submarine. Set Sub. Sea marauder. Sea prowler Sea marauder Sub of a sort Set down Submarine of W.W. I Set down. Stored away (with "up"). Sinker of sorts Set, as a dinner table. Sub that sank Allied ships Set in place. Shipper's worry in W.W. I Sinker Set. Sub Set Ship sinker Sub with sauerkraut? Set, as a stone wall See 7-Down Source of doom for the 17-Across Surrealist is put down Sub in WWII Ship sinker Set down Set in place Set (down) Satisfying thing to get Spacehog "At Least I Got ___" Sub in WWII Submersible warship of WWII Sub you can't eat Sub Some people have a gift for it Set down Shoot the breeze Stored up with away Sort of stationery Set a table Sinker of the Lusitania Shoot the breeze Schmooze Seagoing wolfpack unit Set down Something forbidden by the Treaty of Versailles after W.W. I Source of doom for the 17-Across See 23-Across Set in place Set (down) Set, as a foundation Stealthy WWII craft Sub in WWII Subsurface war vessel Submersible warship of WWII Sub of old Sub you can't eat Seagoing wolfpack unit Ship sinker Sub in WWII Submarine Submarine about to disintegrate Submarine about to explode Submarine might be about Set (down) Shoot the breeze Set, as a trap Shoot the breeze Shoot the breeze Submarine potentially about Set, as a trap Set in place how half of 4 down arrived? Set down area in covering Spread Set left needing succour Set out to give help to learner Set to attack quickly, having changed sides Son will keep one set Set learner with support Set down area in Cork Shoot the breeze School in Dallas (abbr.) Saved, with ''away'' Schoolboy traps the compiler set! Set, as a trap Set (the table) See 12-Down Set down Sleek, as a floor Shiny, as floors. Sleek, as a floor St. Petersburg's home: Abbr. St. Petersburg's home: Abbr Seemingly indifferent Student of Zeno Stiff-upper-lip type Showing no pain Stiff-upper-lip type Stiff-upper-lip type Stone-faced Self-controlled Showing no pain Stiff-upper-lip type Student of Zeno Seneca, for one Stiff-upper-lip type Showing no emotion Stiff-upper-lip sort Student of Xeno. Spartan. Showing no pain Seneca, for one Spartan Seneca was one Self-controlled one Stiff-upper-lip chap Silent sufferer Stiff-upper-lip type Showing no emotion Stiff-upper-lip sort Sort with a stiff upper lip Seneca, philosophically Stone-faced Student of Zeno Stiff-upper-lip type Stiff-upper-lip sort Showing little emotion Showing no emotion Stiff-upper-lip sort Seneca, philosophically Stone-faced Sort with a stiff upper lip Stiff-upper-lip type Stiff-upper-lip type Showing little emotion Showing no emotion Showing little emotion Stony type Stiff-upper-lip sort Someone seemingly indifferent to pleasure or pain Saint Oscar in charge of a philosophy Stiff-upper-lip type Stiff-upper-lip type Showing no emotion Scot free around island for one from School of Philosophy Showing no emotion Showing no emotion Swaybacked sort See 47-Across See 47-Across Sportsman Hunt for whom the N.F.L.'s A.F.C. championship trophy is named 1990s Cabinet member Alexander Senator Alexander from Tennessee Small city in Missouri. Supreme Court Justice: 1911–16 Second Republic of Texas president Supreme Court justice Screen greeting Stampless greeting Stampless sentiment source Something clicked open on a birthday Strip sailor with long coat Superior's title Scott's Father Ambrose. Superior monk Sit ___ by (take no action) Standing ___ by Sit ___ by (do nothing) Sit __ by (do nothing) Stand ___ by (watch without acting) Sit ___ by Standing rules Ship created by Jule Verne for "Twenty Thousand Leagues Under the Sea" Sister of the Seawolf. Sea mollusk. Spiral-shelled creature Sea creature whose name means "sailor" Sea creature to be found in the usual tin, unusually Spiral-shelled sea creature Sea creature behaving badly, one hears, left America Secret meeting Secret assignation Sweeties' meeting Secret romantic meeting Secret rendezvous Secret encounter Secret get-together Secret meeting Secret rendezvous Secret meeting Secret encounter Secret romantic meeting Secret hot date Secret rendezvous Secret get-together Secret meeting Secret rendezvous Secret meeting Secret get-together Secret rendezvous Secret meeting. Secret date. Sub rosa meeting. Sub-rosa date Secret engagement "Same Time, Next Year" happening Subject of an encoded message, maybe Subject of many a billet-doux Sweet meet? Secret meeting Secret rendezvous Secret rendezvous Surreptitious meeting Secret encounter Secret meeting Secret get-together Secret rendezvous Surreptitious rendezvous Secret meeting Secret rendezvous Secret engagement Secret engagement Secret get-together Secret rendezvous Secret meeting Secret rendezvous Secret rendezvous Secret engagement Secret meeting Secret hot date Secret rendezvous Secret hot date Secret rendezvous Secret rendezvous between lovers Secret assignation Stumped, after judge's secret meeting