unmentionably
English
[edit]Etymology
[edit]From unmentionable + -ly.
Adverb
[edit]unmentionably (comparative more unmentionably, superlative most unmentionably)
- In an unmentionable way; indescribably, unutterably, unspeakably.
- They sat down and had one of their old chummy talks until an unmentionably late hour.