14 letters · 23 points in Scrabble
originLearned borrowing from Latin cruci- (a stem of crux (“cross”, noun); possibly from Proto-Indo-European *krewk- (“back, spine; heap; hill (?)”) or *(s)ker- (“to bend; to turn”)) + English verbalist (“one who possesses verbal or oratorical skill”), modelled after crossword (calqued in Latin as cruci- + verbum (“word”, noun)).
Etymology from Wiktionary, CC BY-SA 3.0