In the title compound, C(16)H(17)NO, the two aromatic rings make a dihedral angle of 5.9 (2)°, while the central amide core -NH-C(=O)- is twisted by 44.0 (3) and 47.1 (3)° out of the planes of the 2,3-dimethyl-phenyl and 2-methyl-phenyl rings, respectively. In the crystal, N-H⋯O hydrogen bonds link the mol-ecules into infinite chains running along the b axis.