From Wiktionary, the free dictionary
From disarming + -ly.
disarmingly (comparative more disarmingly, superlative most disarmingly)
- In a disarming manner.
1965, James Holledge, What Makes a Call Girl?, London: Horwitz Publications, page 81:The reporter smiled disarmingly.
2015–2021, qntm, “Introductory Antimemetics”, in There Is No Antimemetics Division, →ISBN, page 21:At that moment the elevator doors open at basement level 8. Alastair Grey is waiting, still smiling disarmingly. He steps forward.