Adverb: unintentionally (comparative more unintentionally, superlative most unintentionally)
- In an unintentional manner; not intentionally.
- 1847, Charlotte Brontë, Jane Eyre, 1st edition, volume II, chapter V, page 132
- "Oh, no! Mason will not defy me; nor knowing it, will he hurt me—but, unintentionally, he might in a moment, by one careless word, deprive me, if not of life, yet for ever of happiness."