In the title compound, C14H21NO, the conformation across the N-C(O) bond is syn-periplanar, the C-N-C-C torsion being -5.9 (5)°. The atoms of the ethyl group attached to the N atom are disordered over two sets of sites with occupancy ratios of 0.65 (2):0.35 (2) (CH2) and 0.689 (14):0.311 (14) (CH3)are linked by very weak C-H⋯O inter-actions forming C(8) chains along [001]. C-H⋯π inter-actions link the mol-ecules along the c-axis direction.