shirk /ʃɜːk $ ʃɜːrk/ BrE AmE verb [intransitive and transitive]
[ Date: 1600-1700 ; Origin: Perhaps from German schurke 'bad man' ]
to deliberately avoid doing something you should do, because you are lazy:
He was fired for shirking.
shirk your responsibilities/duties/obligations
parents who shirk their responsibilities towards their children
—shirker noun [countable]