dallianceEnglishOxford New American Dictionarydalliance /ˈdalēəns, ˈdæliəns / ▸ noun a casual romantic or sexual relationship: Jack was not averse to an occasional dalliance with a pretty girl. ▪ brief or casual involvement with something: Berkeley was my last dalliance with the education system. – ORIGIN Middle English (in the sense ‘conversation’): from dally + -ance.