Definition of screwy in US English:

screwy

adjective

North American
informal
  • Rather odd or eccentric.

    ‘some of the most respected doctors had some of the screwiest ideas’
    • ‘Anyway I like the look of your new site, but it seems your navigation hyperlinks are still a bit screwy.’
    • ‘As always my best efforts should not be trusted since I'm a bit screwy, so if you find any errors on my end please let me know.’
    • ‘You know how people always tell stories about some of the screwiest traditions ever?’
    odd, strange, peculiar, weird, queer, funny, bizarre, eccentric, unusual, abnormal, idiosyncratic, unconventional, outlandish, offbeat, freakish, quirky, quaint, zany, off-centre
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Pronunciation

screwy

/ˈskro͞oē//ˈskrui/