Added 10 October 2026 backless /ˈbækləs/ adjective Categories: Describing WordsRare Words adjective ! Definition from Wiktionary (CC BY-SA). Pronunciation from Wiktionary, via Kaikki.org. More about backless at Wordnik → Where our words come from → Having no back, especially where one would be expected, as with a chair or a dress. a backless surgical gown Having the back uncovered, showing the skin. Related Words: low-cutstraplessbare-backedunbackedbreechlessbuttlessbreecheslessarselessbare-bottomedchairlessasslessbackboneless Back to today's word