The asymmetric unit of the title Schiff base compound, C(21)H(21)NO, contains two crystallographicaly independent mol-ecules. The dihedral angles between the naphthalene mean plane and the benzene ring are 29.28 (8) and 26.92.(8)° in the two mol-ecules. An intra-molecular O-H⋯N hydrogen bond and weak intra-molecular C-H⋯O hydrogen bonds stabilize the structure of each independent mol-ecule.