A screwless terminal block, comprising: a resin housing having a wire insertion opening through which a wire is to be inserted, and an internal wire accommodating space configured to accommodate the wire; and an elastic member configured to come in contact with the wire inserted through the wire insertion opening and apply a force to the wire in a predetermined pressing direction to prevent the wire from coming off, the housing having a slotted screwdriver insertion opening through which a slotted screwdriver is to be inserted to come in contact with the elastic member and deform the elastic member away from the wire accommodating space, wherein, when the slotted screwdriver is inserted through the slotted screwdriver insertion opening, an acute angle of 45° or less is formed by an axis of the slotted screwdriver and a straight line connecting a point A and a point B at a cross-section taken along a plane that includes the axis of the slotted screwdriver and is parallel to the predetermined pressing direction, where the axis of the slotted screwdriver is a central axis of the slotted screwdriver which central axis extends in a longitudinal direction of the slotted screwdriver, the point A is a point of contact between the housing and a part of the slotted screwdriver adjacent to the wire insertion opening, and the point B is a point of contact between the housing and a part of the slotted screwdriver adjacent to the elastic member, wherein the housing has an upper surface including: an insertion opening formation region in which the slotted screwdriver insertion opening is formed; characterised in that the upper surface of the housing further includes an adjacent region adjacent to the insertion opening formation region, wherein the adjacent region protrudes more than the insertion opening formation region, and wherein the point B is located at a corner of the adjacent region. a resin housing having a wire insertion opening through which a wire is to be inserted, and an internal wire accommodating space configured to accommodate the wire; and an elastic member configured to come in contact with the wire inserted through the wire insertion opening and apply a force to the wire in a predetermined pressing direction to prevent the wire from coming off, the housing having a slotted screwdriver insertion opening through which a slotted screwdriver is to be inserted to come in contact with the elastic member and deform the elastic member away from the wire accommodating space, wherein, when the slotted screwdriver is inserted through the slotted screwdriver insertion opening, an acute angle of 45° or less is formed by an axis of the slotted screwdriver and a straight line connecting a point A and a point B at a cross-section taken along a plane that includes the axis of the slotted screwdriver and is parallel to the predetermined pressing direction, where the axis of the slotted screwdriver is a central axis of the slotted screwdriver which central axis extends in a longitudinal direction of the slotted screwdriver, the point A is a point of contact between the housing and a part of the slotted screwdriver adjacent to the wire insertion opening, and the point B is a point of contact between the housing and a part of the slotted screwdriver adjacent to the elastic member, wherein the housing has an upper surface including: an insertion opening formation region in which the slotted screwdriver insertion opening is formed; characterised in that the upper surface of the housing further includes an adjacent region adjacent to the insertion opening formation region, wherein the adjacent region protrudes more than the insertion opening formation region, and wherein the point B is located at a corner of the adjacent region. an insertion opening formation region in which the slotted screwdriver insertion opening is formed; characterised in that the upper surface of the housing further includes an adjacent region adjacent to the insertion opening formation region, wherein the adjacent region protrudes more than the insertion opening formation region, and wherein the point B is located at a corner of the adjacent region.