6 letters · 12 points in Scrabble
adverb without speed (`slow' is sometimes used informally for `slowly')
adverb in music
originFrom Middle English slowly, slowli, slouli, slowliche, from Old English slāwlīċe (“slowly; sluggishly”), equivalent to slow + -ly. Compare Old Norse slæliga, sljóliga.
Etymology from Wiktionary, CC BY-SA 3.0