A connector and an electric wire, the connector comprising: a terminal fitting provided with an electric contact adapted to be connected with a mating terminal fitting and an electric wire connection part connected with the electric wire, the electric wire connection part having a flange projecting from outside of the electric wire connection part; a housing provided with a terminal housing accommodating the terminal fitting, the terminal housing having a first housing accommodating the electric wire connection part, an end of the electric wire connected with the electric wire connection part; a second housing extending to the first housing; and a step face formed between the first housing and the second housing, wherein the electric wire connection part is contactable with the step face; a rear holder attached to an end of the housing so as to prevent the terminal fitting from dropping out from the terminal housing; a rubber closure attached to outside of the electric wire and press-fitted into the terminal housing; and a synthetic resin spacer accommodated in the first housing of the terminal housing, the spacer being arranged between the flange and the rubber closure, and including a main body shaped circular in cross-section and positioning the electric wire connection part and the electric wire therewithin, the spacer being provided with a cutaway, characterized by at least a pair of projections projecting from inside of the main body and opposing to each other, a space between the at least pair of projections being formed narrower than a diameter of the electric wire, and diametrical portions of the electric wire connection part and the electric wire being positioned within the cutaway in an assembly state in such a manner that the diametrical portions of the electric wire connection part and the electric wire are passed through between the at least pair of projections while the space between the at least pair of projections is broadened and a width of the cutaway in such a state that the main body is not bent is formed broader than a diameter of the electric wire connection part and the electric wire. a terminal fitting provided with an electric contact adapted to be connected with a mating terminal fitting and an electric wire connection part connected with the electric wire, the electric wire connection part having a flange projecting from outside of the electric wire connection part; a housing provided with a terminal housing accommodating the terminal fitting, the terminal housing having a first housing accommodating the electric wire connection part, an end of the electric wire connected with the electric wire connection part; a second housing extending to the first housing; and a step face formed between the first housing and the second housing, wherein the electric wire connection part is contactable with the step face; a rear holder attached to an end of the housing so as to prevent the terminal fitting from dropping out from the terminal housing; a rubber closure attached to outside of the electric wire and press-fitted into the terminal housing; and a synthetic resin spacer accommodated in the first housing of the terminal housing, the spacer being arranged between the flange and the rubber closure, and including a main body shaped circular in cross-section and positioning the electric wire connection part and the electric wire therewithin, the spacer being provided with a cutaway, characterized by at least a pair of projections projecting from inside of the main body and opposing to each other, a space between the at least pair of projections being formed narrower than a diameter of the electric wire, and diametrical portions of the electric wire connection part and the electric wire being positioned within the cutaway in an assembly state in such a manner that the diametrical portions of the electric wire connection part and the electric wire are passed through between the at least pair of projections while the space between the at least pair of projections is broadened and a width of the cutaway in such a state that the main body is not bent is formed broader than a diameter of the electric wire connection part and the electric wire.