English edit

Etymology edit

Short for jolly decent.

Adjective edit

jolly D (not comparable)

  1. (UK, colloquial, dated) Thoroughly decent.
    • 2008, Richard Gordon, Doctor Gordon's Casebook, page 155:
      'Jolly D of you, Doctor, to grace the girls' end-of-term carol service.'
    • 2020, Nancy Spain, Death Goes on Skis:
      Thanks for paying for my drink. Jolly D of you. I think you ought to be in bed.