8 letters · 8 points in Scrabble
adjective firm in purpose or belief; characterized by firmness and determination
adjective characterized by quickness and firmness
originFrom Latin resolutus (“released”), past participle of resolvō (“to release, to unbind”) (re- + solvō, whence solve). Compare typologically Russian реши́тельный (rešítelʹnyj) (< реши́ть (rešítʹ)).
Etymology from Wiktionary, CC BY-SA 3.0