11 letters · 16 points in Scrabble
adverb in an erratic unpredictable manner
originEtymology tree English erratic Proto-Italic *-ālis Latin -ālisbor. Old French -albor. ▲ Latin -ālis Old French -elbor. ▲ Latin -ālisbor. Middle English -al Middle English -ly Middle English -ally English -ally English erratically From erratic + -ally.
Etymology from Wiktionary, CC BY-SA 3.0