11 letters · 19 points in Scrabble
adverb in a manner to produce an effect
originEtymology tree English operative Proto-Indo-European *leyg-der. Proto-Germanic *līkąder. Proto-Germanic *-līkaz Proto-Germanic *-ê Proto-Germanic *-līkê Proto-West Germanic *-līkē Old English -līċe Middle English -ly English -ly English operatively From operative + -ly.
Etymology from Wiktionary, CC BY-SA 3.0