[third-class(1)] {adj.} Belonging to the third class; of the third highest […]

[third-class] (2) {adv.} By third class. * /How did you send […]

[this] See: [OUT OF THIS WORLD].

[this and that] also [this, that, and the other] {n. phr.} […]

[this is how the cookie crumbles] or [that's how the cookie […]

[this, that, and the other] See: [THIS AND THAT].

[thither] See: [HITHER AND THITHER].

[thorn in the flesh] or [thorn in one's side] {n. phr.} […]

[though] See: [AS IF] or [AS THOUGH].

[thought] See: [FOOD FOR THOUGHT], [PENNY FOR ONE'S THOUGHTS], [PERISH THE […]