The connector includes a terminal and a resin housing that houses and retains the terminal. One or a plurality of grooves extend in a part of a region of a surface of the terminal. An inclination surface is formed near an opening of the groove. The groove is formed to have a part with a minimum width parallel to the surface of the terminal and a part with a maximum width parallel to the surface of the terminal. An angle formed by the inclination surface with respect to the surface of the terminal is between 100 degrees and 150 degrees. Moreover, a ratio of the minimum width of the groove with respect to the maximum width of the groove is equal to or greater than 0.58 and less than 1.0. The terminal is embedded and fixed in the resin forming the housing.