One-lever valve, in particular sanitary one-lever mixing valve, comprising: - a movably arranged valve body, - an actuation lever which comprises a stick-shaped operation section, a bearing section thickened relative thereto, and a valve body coupling section coupled to the valve body, - a bearing receptacle (3, 12) in which the actuation lever together with its bearing section is received movably within a one-dimensional or two-dimensional displacement region, wherein the displacement region comprises at least one pivot movement of the actuation lever around a pivot axis non-parallel to its longitudinal axis and extending through the thickened bearing section, and - at least one snap means, which in a snapped-in position defines an associated snap position of the actuation lever within its displacement region and which is capable of being snapped-in and snapped-out self-actingly with an actuation movement of the actuation lever and which includes a snap element as well as a counter snap element interacting with said snap element, of which elements one is formed on the thickened bearing section of the actuation lever and the other one is formed on the bearing receptacle, - wherein the at least one snap means includes an elastically movably-held snap cam and a corresponding snap recess (21 1, 21 2, 21 3, 21 4) as snap element and counter snap element, wherein the at least one snap means includes at least two snap means with different associated snap positions of the actuation lever, which share a common snap cam (20 1) as snap element or include two snap cams (20 6, 20 7), which are arranged together with an interposed elastic element (18 6) in a common through hole (17 6) of the thickened bearing section, and/or - wherein the thickened bearing section is formed in the shape of a ball and the bearing receptacle in the shape of a spherical shell and the snap means has a snap mobility with a main component radial to the ball-shaped bearing section, - wherein the ball-shaped bearing section and the spherical shell-shaped bearing receptacle are coupled to one another by means of a sliding guide means on the one hand to a sliding guide track and on the other hand to a sliding cam movably guided therein, wherein the sliding guide means defines a pivot movement of the actuation lever around a first diameter axis of the ball-shaped bearing section perpendicular to the longitudinal axis of said actuation lever and the actuation lever is additionally pivotably movable around the sliding cam, the longitudinal axis of which forms a second diameter axis of the ball-shaped bearing section non-parallel to the first diameter axis. - a movably arranged valve body, - an actuation lever which comprises a stick-shaped operation section, a bearing section thickened relative thereto, and a valve body coupling section coupled to the valve body, - a bearing receptacle (3, 12) in which the actuation lever together with its bearing section is received movably within a one-dimensional or two-dimensional displacement region, wherein the displacement region comprises at least one pivot movement of the actuation lever around a pivot axis non-parallel to its longitudinal axis and extending through the thickened bearing section, and - at least one snap means, which in a snapped-in position defines an associated snap position of the actuation lever within its displacement region and which is capable of being snapped-in and snapped-out self-actingly with an actuation movement of the actuation lever and which includes a snap element as well as a counter snap element interacting with said snap element, of which elements one is formed on the thickened bearing section of the actuation lever and the other one is formed on the bearing receptacle, - wherein the at least one snap means includes an elastically movably-held snap cam and a corresponding snap recess (21 1, 21 2, 21 3, 21 4) as snap element and counter snap element, wherein the at least one snap means includes at least two snap means with different associated snap positions of the actuation lever, which share a common snap cam (20 1) as snap element or include two snap cams (20 6, 20 7), which are arranged together with an interposed elastic element (18 6) in a common through hole (17 6) of the thickened bearing section, and/or - wherein the thickened bearing section is formed in the shape of a ball and the bearing receptacle in the shape of a spherical shell and the snap means has a snap mobility with a main component radial to the ball-shaped bearing section, - wherein the ball-shaped bearing section and the spherical shell-shaped bearing receptacle are coupled to one another by means of a sliding guide means on the one hand to a sliding guide track and on the other hand to a sliding cam movably guided therein, wherein the sliding guide means defines a pivot movement of the actuation lever around a first diameter axis of the ball-shaped bearing section perpendicular to the longitudinal axis of said actuation lever and the actuation lever is additionally pivotably movable around the sliding cam, the longitudinal axis of which forms a second diameter axis of the ball-shaped bearing section non-parallel to the first diameter axis.