Meaning of Jekyll and Hyde in English:

Jekyll and Hyde

Pronunciation /ˌdʒɛk(ə)l ən(d) ˈhʌɪd/

noun

usually as modifier
  • Used in reference to a person or thing that alternately displays two different sides to their character or nature.

    ‘former colleagues said he was a Jekyll and Hyde character’
    • ‘a real Jekyll and Hyde side who can be brilliant one week and awful the next’
    • ‘he was a Jekyll and Hyde—a smart, ambitious student who had been accepted into West Point but had a dark side’
    • ‘The club has displayed a Jekyll and Hyde personality.’
    • ‘The Gazette described us a Jekyll and Hyde side and that has summed us up exactly so far this season.’
    • ‘In conversation, it's surprising how open he appears to be; until you realise that you've spent an evening with a Jekyll and Hyde character, and you're no closer to understanding what makes him tick.’
    • ‘York, pretty as a postcard, complete with genteel tearooms, but day to night can seem like a Jekyll and Hyde transformation.’
    • ‘Kyles are a Jekyll and Hyde outfit: at home they are a match for most teams; away they have struggled to put out a quality side.’
    • ‘Stirling produced a Jekyll and Hyde performance which left their supporters frustrated as well as dismayed.’
    • ‘Teenagers have a reputation for possessing something of a Jekyll and Hyde streak.’
    • ‘That's the thing about Edinburgh; it's almost become a cliché but it really is a Jekyll and Hyde city.’
    • ‘Yet there is a Jekyll and Hyde quality to this book.’
    • ‘Living with a Jekyll and Hyde, forever walking on eggshells, is no way to live.’

Origin

Late 19th century from Robert Louis Stevenson's story The Strange Case of Dr Jekyll and Mr Hyde (see Jekyll, Dr).