To-a-t meaning

(idiomatic) Precisely; exactly; perfectly; with great attention to detail.

The announcement of the political endorsement was timed to a T.

The colors of your suit fit you to a T.


Origin of to-a-t

  • Other theories with little evidence point to golf tees, for their small size; this may have at least influenced the alternate form to a tee. Some speculate a relationship with T-square, a measuring device introduced around the turn of the century. Others claim the expression refers to the correct completion of the letter t by crossing it.

    From Wiktionary