The story
- Old English · inherited frombealuful
- Middle English · inherited frombaleful
- English todaybaleful
From Middle English baleful, balful, baluful, from Old English bealuful, which was equivalent to bealu + -ful. By surface analysis, bale (“evil, woe”) + -ful. See bale for further etymology.
Etymology from Wiktionary, CC BY-SA 4.0.