Definition of unco in English:

unco

adjective

Scottish
  • Unusual or remarkable.

    • ‘I mean for a professional cricketer to slide his foot way back in line with his stumps and then rake across them there's something either very unco or very illicit going on.’
    • ‘While I may be friends with someone similar to me, I've never been attracted to someone who was noticeably unreliable; prone to depression or unco.’
    • ‘So he mounted the blocks in his resplendent blue Speedos and did a massive unco belly flop on the starters gun.’
    • ‘I was so excited I tripped and twisted my ankle (although not, of course, in an unco way).’
    • ‘A straight right, an upper cut, a right hook or some unco combination of all three?’
    extraordinary, exceptional, amazing, astonishing, astounding, marvellous, wonderful, sensational, stunning, incredible, unbelievable, miraculous, phenomenal, prodigious
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adverb

Scottish
  • [as submodifier] Remarkably; very.

    ‘it's got an unco fine taste’
    • ‘Colours mingled unco fine.’
    very, extremely, exceedingly, exceptionally, especially, tremendously, immensely, vastly, hugely
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noun

Scottish
  • 1A stranger.

    • ‘Best of all, even a total unco like me can complete the tasks with a bit of practice.’
    unknown person
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    1. 1.1News.
      • ‘Each tells the uncos that he sees or hears.’

Origin

Late Middle English (in the sense ‘unknown, strange’): alteration of uncouth.

Pronunciation:

unco

/ˈʌŋkə/