Wall or ceiling panel, which, on one side edge of the panel , comprises a male coupling part and, on an opposite side edge of the panel , comprises a female coupling part , wherein the coupling parts (13-14) are configured such that two of such panels , by means of the coupling parts (13-14), can be coupled to each other in a plane and thus a coupled condition can be realized between the panels ; wherein the male coupling part comprises a tongue and the female coupling part comprises a groove , which tongue and groove , in the coupled condition, form a tongue and groove connection, which realizes a mechanical locking between the panels in the direction (D1) perpendicular to the plane of the panels ; wherein the groove is bordered by a front lip and a rear lip ; and wherein the coupling parts (13-14) each comprise a locking part (28-29), which locking parts (28-29), in the coupled condition, realize a mechanical locking between the panels in the direction (D1) in the plane of the panels and perpendicular to the side edges (9-10); optionally wherein the panel is adapted to form a ceiling-high wall panel and/or optionally has a length of at least 2400 mm; wherein the panel shows the feature that the rear lip is configured such that the rear lip , or at least a part thereof, can bend in rearward direction, even if the panel or the rear lip is secured to a flat substructure ; wherein the male coupling part and the female coupling part are realized partially, and preferably entirely, of the material of the panel and in one piece therewith; wherein the male coupling part and the female coupling part are adapted to be realized by means of cutting or milling treatments; the rear lip extends in distal direction beyond the open or free end of the front lip ; wherein the coupling parts (13-14) are of the turning type, preferably with snap or click effect; wherein the rear lip , at the rear side thereof, is provided with a recess which allows the aforementioned rearward bending of the rear lip or at least a part thereof; wherein the panel is wood-based, characterized in that the part of the rear lip which, in distal direction, extends beyond the open or free end of the front lip , is longer than the thickness (T) of the panel ; wherein the most proximally situated point of the recess is situated at a distance different from zero from the open or free end of the front lip . wherein the male coupling part and the female coupling part are realized partially, and preferably entirely, of the material of the panel and in one piece therewith; wherein the male coupling part and the female coupling part are adapted to be realized by means of cutting or milling treatments; the rear lip extends in distal direction beyond the open or free end of the front lip ; wherein the coupling parts (13-14) are of the turning type, preferably with snap or click effect; wherein the rear lip , at the rear side thereof, is provided with a recess which allows the aforementioned rearward bending of the rear lip or at least a part thereof; wherein the panel is wood-based, characterized in that the part of the rear lip which, in distal direction, extends beyond the open or free end of the front lip , is longer than the thickness (T) of the panel ; wherein the most proximally situated point of the recess is situated at a distance different from zero from the open or free end of the front lip . <EOS>