a person who devises or executes designs, esp. one who creates forms, structures, and patterns, as for works of art or machines.

a schemer, intriguer, or plotter.

designed or created by or carrying a label or identification of a designer, esp. a fashion designer, but often mass-produced

designer jeans.

noun

architect , author , costumier , couturier , deviser , engineer , fabricator , fashion designer , fashioner , inventor , maker , originator , planner , producer , artificer , stylist