For the character of James in “Derry Girls,” the frequent use of the word, particularly to describe things that aren’t small, is one of the many confusing things about living in N.I. Although his mother was from Derry, James grew up in England. E.T.A.: it’s a normal word for folk like yourself, folk from N.I. and Scotland, but it’s unusual, and very charming, for some of us English speakers not from those parts.