| the rubber meets the road | | | |
| the shoe is on the other foot | | | |
| the show must go on | | | |
| the stroke that broke the camel's back | | | |
| the sun sets on something | | | |
| the thing of it | | | |
| the wheels fell off | | | |
| the world over | | | |
| thick and thin | | | |
| thick end | | | |
| thick of things | | | |
| thigh-slapper | | | |
| thin air | | | |
| think aloud | | | |
| think back | | | |
| think of England | | | |
| think one hung the moon | | | |
| think on one's feet | | | |
| think out loud | | | |
| think the world of | | | |
| think twice | | | |
| thin-skinned | | | |
| thin the herd | | | |
| third string | | | |
| third wheel | | | |
| this minute | | | |
| thorn in someone's side | | | |
| though I say it who should not | | | |
| thought bubble | | | |
| thread of thought | | | |
| thread the needle | | | |
| three-dog night | | | |
| three guys in a garage | | | |
| three-on-the-tree | | | |
| three-ring circus | | | |
| three skips of a louse | | | |
| three squares | | | |
| thrill kill | | | |
| thrill killer | | | |
| through the mill | | | |
| through the roof | | | |
| throw a fit | | | |
| throw a kiss | | | |
| throw an ant into a sty | | | |
| throw an eye | | | |
| throw a sprat to catch a mackerel | | | |
| throw a tantrum | | | |
| throw a wet blanket on | | | |
| throw a wobbly | | | |
| throw a wrench in the works | | | |
| throw caution to the wind | | | |
| throw down the gauntlet | | | |
| throw dust in someone's eyes | | | |
| throw in at the deep end | | | |
| throw in the towel | | | |
| throw off | | | |
| throw off balance | | | |
| throw one's cap over the windmill | | | |
| throw one's hat in the ring | | | |
| throw one's hotdog down someone's hallway | | | |
| throw one's toys out of the pram | | | |
| throw one's weight behind | | | |
| throw out | | | |
| throw someone a rope | | | |
| throw spaghetti at the wall | | | |
| throw the baby out with the bathwater | | | |
| throw the book at | | | |
| throw things at the wall and see what sticks | | | |
| throw to the dogs | | | |
| throw up one's hands | | | |
| throw up the sponge | | | |
| thumb a ride | | | |
| thumb one's nose | | | |
| thus and such | | | |
| tick all the boxes | | | |
| tickled pink | | | |
| tickle pink | | | |
| tickle the dragon's tail | | | |
| tickle the ear | | | |
| tide over | | | |
| tied in knots | | | |
| tie in with | | | |
| tie one on | | | |
| tie the knot | | | |
| tie up | | | |
| tighten the purse strings | | | |
| tight-lipped | | | |
| tight spot | | | |
| tight squeeze | | | |
| time after time | | | |
| time alone will tell | | | |
| time burglar | | | |
| time flies | | | |
| time is ticking | | | |
| time off | | | |
| time out | | | |
| time out of mind | | | |
| time-waster | | | |
| time will tell | | | |
| tin-pot dictatorship | | | |