Definition of Mondayishness in US English:



  • The quality of feeling produced by Mondays. Originally of a clergyman: an indisposition or lethargy, caused by the work of Sunday (now rare). Subsequently also more widely: the lethargy or disinclination resulting from a busy or eventful weekend or from having to resume work after the weekend.


Mid 19th century; earliest use found in George Gilfillan (1813–1878), minister of the United Presbyterian church and author. From Mondayish + -ness.