1 noun replacing word, namea leithéid seohe asked me to do so-and-sod'iarr sé orm a leithéid seo a dhéanamhI met so-and-socasadh mo dhuine orm2 noun informal, euphemistic replacing term of abuseyou're a clumsy so-and-sois tú an pleidhce liopasta3 adjective informal, euphemistic he can make his own so-and-so dinneris féidir leis a dhiabhal dinnéar féin a dhéanamh