Definition of bad boy in US English:

bad boy

noun

informal
  • 1A man who does not conform to approved standards of behavior, especially in a particular sphere of activity.

    ‘the bad boy of classical music’
    • ‘Watch out when his inner bad boy kicks in.’
    • ‘One of Hong Kong cinema's reigning bad boys isn't a director, actor, or martial arts choreographer.’
    • ‘But I guess bad boys is what attracts you to a story.’
    • ‘I don't think I'm a bad boy.’
    • ‘Football is something he understands, but counselling bad boys is hardly in his remit.’
    • ‘If you're into bad boys, rocker Tommy Lee made the list.’
    • ‘Besides, maybe her attraction for bad boys was less about them, more about her.’
    • ‘He might sound like a hockey bad boy, the kind of player you might expect to lead the league in penalty minutes.’
    • ‘You get old-age pensioners labelled as bad boys because they were rock stars years ago.’
    • ‘Despite her disdain for the bad boys, they keep on pursuing her.’
    • ‘He isn't even the sport's leading bad boy anymore.’
    • ‘Needless to say, the bad boys of the title will be coming for you in cinemas from Thursday, October 2.’
    • ‘Laurie seems like a good guy, but his bad boy needs a little help.’
    • ‘I've never had any affinity for the overhyped mythology of the bad boy, which I think is basically phony.’
    • ‘It is no coincidence that two current bad boys of sports agree on what constitutes the essence of sports.’
    • ‘He's one of the bad boys of Canadian theatre.’
    • ‘Perhaps this is the spirit that has drawn Stone to Hollywood's former bad boy.’
    • ‘We've got the new details of the wedding between the beauty and the bad boy.’
    • ‘The current bad boy of college football visits the winningest program in college football history.’
    • ‘He earned a reputation as the bad boy of local tennis.’
    dissenter, dissentient, protester, rebel, renegade, freethinker, apostate, heretic, schismatic, recusant, seceder, individualist, free spirit, maverick, unorthodox person, eccentric, original, deviant, misfit, hippy, dropout, fish out of water, outsider
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  • 2US A thing that is regarded as extremely impressive or effective.

    ‘we went 142 mph in that bad boy’
    • ‘Plus, there is a lithium ion in this badboy, rated for 10 hours of use.’
    • ‘Check out these bad boys that I made.’
    • ‘The speakers on these bad boys are also made of soft leather and swivel a full 90 degrees.’
    • ‘Man, how often do you wash those bad boys of yours?’
    • ‘I hereby give you permission to testdrive any/all of these bad-boys at the "open mic" comedy nite of your choice.’
    • ‘Why don't we put this bad boy in our test machine?’
    • ‘Give me a hand with this bad boy.’
    • ‘The 64-bit bad boy also has hyperthreading to help certain software loads and demand based switching to improve performance per watt.’
    • ‘I was home from work by 2PM every day, so I'd boot that bad boy and play around with DOS commands.’
    • ‘It's your job to enter the tombs and put this bad boy back to rest.’
    • ‘Let's go, tax that bad boy.’
    • ‘How the hell am I going to manage this bad boy?’
    • ‘At $59.95 per set, five of these bad boys would constitute a serious investment.’
    • ‘He's around here somewhere unless someone cooked that bad boy.’
    • ‘The negative space on the frame is almost as big as the soul space so you can do plenty of different variations on tricks with these bad boys.’
    • ‘This bad boy is far from finished.’