UH
Worth 5 points before any premium square, and the 12th highest-scoring of 96 — tied with 21 others.
UH extends into 1 three-letter word, which is the 4th least extendable of 96 — tied with 1 other. That is the number worth memorising: a two-letter word is a place to put tiles, but a well-hooked one is a place to put them where the board stays open.
Every hook
- H→HUH
No letter after UH makes a word.
How often you can actually play it
Out of an opening rack, 3.06% of the time you hold the letters for UH outright, the 12th least likely of 96 — tied with 4 others. Counting a blank as whichever letter is missing lifts that to 7.41%, though spending one of the two blanks on a two-letter word is rarely the play. Exact hypergeometrics over the 100-tile bag, not a simulation.