The letters in PRIMITIVE make 76 words of two letters or more. The longest is PRIMITIVE at 9 letters, and the highest-scoring is PRIMITIVE at 16 points.
No other single word uses all 9 letters of PRIMITIVE. PRIMITIVE has 9 letters: 4 vowels and 5 consonants, worth 16 points before any board bonuses.
9-letter words 1
6-letter words 4
5-letter words 11
merit7miter7mitre7prime9primi9remit7rivet8tempi9timer7tripe7viper10
4-letter words 29
emir6emit6impi8item6mire6miri6mite6peri6perm8pert6perv9pier6piet6prim8rime6ripe6rite4rive7temp8term6tier4time6tipi6tire4trim6trip6vert7vier7vire7
3-letter words 21
ert3imp7ire3met5mir5per5pet5pie5pit5rei3rem5rep5ret3rev6rim5rip5tie3tip5vet6vie6vim8
2-letter words 10
em4er2et2it2me4mi4pe4pi4re2ti2
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.