A terminal device (1, 1A), comprising: a terminal portion; a pressing portion that is disposed to face one surface of the terminal portion, the pressing portion being configured to hold an electric wire inserted along an inserting direction from an insertion port so that the electric wire is sandwiched between the pressing portion and the terminal portion; a locking portion that is elastic, the locking portion being disposed to face the one surface of the terminal portion, and the locking portion being configured to restrict movement of the electric wire toward the insertion port by contact with the electric wire; wherein the pressing portion includes a first pressing piece, a second pressing piece, a third pressing piece, and a contact portion that joins the second pressing piece and the third pressing piece; wherein the second pressing piece and the third pressing piece have a structure formed in approximately a V-shape, in a plane including both of the inserting direction, and a facing direction in which the pressing portion and the terminal portion face each other; wherein the contact portion is curved convexly toward the terminal portion in the facing direction, in said plane; and wherein the third pressing piece of the pressing portion on a side of the insertion port in the inserting direction is inclined relative to the one surface of the terminal portion so as to be further separated from the terminal portion as approaching the insertion port in the inserting direction; characterized in that the pressing portion and the locking portion being members independently separated from each other. a terminal portion; a pressing portion that is disposed to face one surface of the terminal portion, the pressing portion being configured to hold an electric wire inserted along an inserting direction from an insertion port so that the electric wire is sandwiched between the pressing portion and the terminal portion; a locking portion that is elastic, the locking portion being disposed to face the one surface of the terminal portion, and the locking portion being configured to restrict movement of the electric wire toward the insertion port by contact with the electric wire; wherein the pressing portion includes a first pressing piece, a second pressing piece, a third pressing piece, and a contact portion that joins the second pressing piece and the third pressing piece; wherein the second pressing piece and the third pressing piece have a structure formed in approximately a V-shape, in a plane including both of the inserting direction, and a facing direction in which the pressing portion and the terminal portion face each other; wherein the contact portion is curved convexly toward the terminal portion in the facing direction, in said plane; and wherein the third pressing piece of the pressing portion on a side of the insertion port in the inserting direction is inclined relative to the one surface of the terminal portion so as to be further separated from the terminal portion as approaching the insertion port in the inserting direction; characterized in that the pressing portion and the locking portion being members independently separated from each other.