Definition of fat-fingered in US English:

fat-fingered

adjective

humorous, informal
  • See fat finger

    • ‘The official explanation was that it was a fat-fingered trade, caused by someone inputting the wrong data on stock orders.’
    • ‘It was just one digit removed from Pizza Hut, a digit fat-fingered dialers found with unnerving precision on a Friday night.’
    • ‘Initially, strategists speculated that a fat-fingered trader could be to blame for the early tumble, saying it appeared to have been a blip caused by a mistaken trade, possibly by someone typing in the wrong price.’
    • ‘Even small, fat-fingered typing mistakes cause regret.’
    • ‘Talk to me about, was it the uncertainty as to what the EU would do that led to the big sell-off last Thursday and all this talk of fat-fingered trading?’