e 1 x 8 t 1 e 1 m 3 p 3 o 1 r 1 a 1 n 1 e 1 o 1 u 1 s 1 l 1 y 4
16 letters · 30 points in Scrabble
Meaning
adverb without prior preparation
originEtymology tree English extemporaneous Middle English -ly English -ly English extemporaneously From extemporaneous + -ly.
Etymology from Wiktionary, CC BY-SA 3.0