9 letters · 13 points in Scrabble
verb make sharp or acute; taper; make (something) come to a point
adjective (of a leaf shape) narrowing to a slender point
originFirst attested in 1611; borrowed from Latin acuminātus, perfect passive participle acuminō (“to sharpen to a point”), see -ate (adjective-forming suffix) and -ate (verb-forming suffix).
Etymology from Wiktionary, CC BY-SA 3.0