1. to skip work, school, or duties without permission or a valid/suitable excuse
play hooky from school/work
To 'play hooky' is to skip school or work without a valid or good excuse. Similar meaning expressions include 'play truant' or 'go mitching'. This is a phrase you will more often hear in social situations to talk about children skipping school, or employees calling in sick where others do not really believe that they are in fact, sick.