Definition of shirtiness in English:

shirtiness

noun

British
informal
  • See shirty

    • ‘Our response: we realise any further shirtiness is pointless.’
    • ‘Fortunately, there are various degrees of shirtiness running as sub-themes alongside the more obvious trends.’
    • ‘We don't have to like each other all the time - any shirtiness just adds to the momentum.’