The title compound, C(18)H(15)NO, is a Schiff base prepared from an acid-catalyzed condensation reaction between 1-naphthaldehyde and 6-amino-m-cresol. Intra-molecular hydrogen bonding occurs via an O-H⋯N inter-action, generating an S(5) ring motif. Neighboring phenol groups participate in inter-molecular hydrogen bonding through an O-H⋯O inter-action, forming chains. The O atom of the phenol g...