Unscrambling PROMPT gives 28 words. PROMPT is the longest, and PROMPT scores the most at 12 points.
No other single word uses all 6 letters of PROMPT. PROMPT has 6 letters: 1 vowel and 5 consonants, worth 12 points before any board bonuses.
6-letter words 1
5-letter words 1
tromp9
4-letter words 7
mort6pomp10port6prom8prop8romp8trop6
3-letter words 14
mop7mor5mot5opt5ort3pom7pop7pot5pro5rom5rot3tom5top5tor3
2-letter words 5
mo4om4op4or2to2
Words are from our open word list and include some game-only words. Rude words are left out of this page; the unscrambler shows every valid word, lets you add blank tiles and filter by length.