11 letters · 16 points in Scrabble
adjective capable of arousing or accelerating physiological or psychological activity or response by a chemical agent
originEtymology tree Proto-Indo-European *(s)tey-? Latin stimulus Latin stimulo Latin stimulatusbor. English stimulate Proto-Indo-European *-wós Proto-Indo-European *-iHwósder. Latin -īvus Old French -ifbor. Middle English -yf English -ive English stimulative From stimulate + -ive.
Etymology from Wiktionary, CC BY-SA 3.0