be a devil

Related to be a devil: Devil worship

be a devil

A phrase intended to encourage someone to do something, especially something they are reluctant or unsure about. Primarily heard in UK. A: "Oh, be a devil and get dessert." B: "But what about my diet?"
See also: devil
Farlex Dictionary of Idioms.

be a devil!

said when encouraging someone to do something that they are hesitating to do. informal
Farlex Partner Idioms Dictionary

be a ˈdevil

(British English) said to encourage somebody to do something that they are not sure about doing: Go on, be a devil, Catherine! Buy yourself some new clothes for once!
See also: devil
Farlex Partner Idioms Dictionary
See also:
  • a ghost at the feast
  • (someone or something) promises well
  • a fast talker
  • a/the feel of (something)
  • (I) wouldn't (do something) if I were you
  • (have) got something going (with someone)
  • a horse of another
  • a horse of another color
  • a horse of another colour
  • a straw will show which way the wind blows