smart casual
or smart-casual
adjective
(of clothing) neat or professional-looking but fairly casual: The dress code for the event will be smart casual.
noun
smart casual clothing or style.
Origin of smart casual
First recorded in 1920–25
Words nearby smart casual
smart aleck,
smart as a whip,
smart ass,
smart bomb,
smart card,
smart casual,
smart drink,
smart drug,
smart dust,
smart mob,
smart money