A connector comprising: a connector housing (10; 160) formed with at least one cavity, at least one terminal fitting (20; 140) to be at least partly inserted into the cavity and having a crimping portion at or near a rear end portion, the crimping portion having at least one crimping piece (24; 144, 148), at least one wire (30; 110) connected with the crimping portion, and at least one resilient plug (40; 120) formed with a plurality of outer lips (44A, 44B; 126) to be held in close contact with the inner circumferential surface of the cavity while being resiliently deformed and a plurality of inner lips (46A, 46B, 46C; 127) to be held in close contact with the outer circumferential surface of the wire (30; 110) while being resiliently deformed, wherein: an area of the outer lip (44A, 44B; 126) not resiliently deformed radially outward of a virtual line corresponding to the inner circumferential surface of the cavity in a cross section including axis lines of the resilient plug (40; 120) and the cavity is specified as an outer virtual deforming portion (45A, 45B), an area of the inner lip (46A, 46B, 46C; 127) not resiliently deformed radially inward of a virtual line (31 L) corresponding to the outer circumferential surface of the wire (30; 110) in an undeformed state in the cross section including axis lines of the resilient plug (40; 120) and the wire (30; 110) is specified as an inner virtual deforming portion (47A, 47B, 47C), and at least a part of the inner virtual deforming portion (47A, 47B, 47C) is so arranged as to correspond to only a part of the outer virtual deforming portion (45A, 45B) in a longitudinal direction, characterized in that the first inner lip (46A; 127) being the foremost lip is so arranged such that a part of the front end side of the first inner virtual deforming portion overlaps with a rear end portion of the crimping piece. a connector housing (10; 160) formed with at least one cavity, at least one terminal fitting (20; 140) to be at least partly inserted into the cavity and having a crimping portion at or near a rear end portion, the crimping portion having at least one crimping piece (24; 144, 148), at least one wire (30; 110) connected with the crimping portion, and at least one resilient plug (40; 120) formed with a plurality of outer lips (44A, 44B; 126) to be held in close contact with the inner circumferential surface of the cavity while being resiliently deformed and a plurality of inner lips (46A, 46B, 46C; 127) to be held in close contact with the outer circumferential surface of the wire (30; 110) while being resiliently deformed, wherein: an area of the outer lip (44A, 44B; 126) not resiliently deformed radially outward of a virtual line corresponding to the inner circumferential surface of the cavity in a cross section including axis lines of the resilient plug (40; 120) and the cavity is specified as an outer virtual deforming portion (45A, 45B), an area of the inner lip (46A, 46B, 46C; 127) not resiliently deformed radially inward of a virtual line (31 L) corresponding to the outer circumferential surface of the wire (30; 110) in an undeformed state in the cross section including axis lines of the resilient plug (40; 120) and the wire (30; 110) is specified as an inner virtual deforming portion (47A, 47B, 47C), and at least a part of the inner virtual deforming portion (47A, 47B, 47C) is so arranged as to correspond to only a part of the outer virtual deforming portion (45A, 45B) in a longitudinal direction, characterized in that the first inner lip (46A; 127) being the foremost lip is so arranged such that a part of the front end side of the first inner virtual deforming portion overlaps with a rear end portion of the crimping piece. an area of the outer lip (44A, 44B; 126) not resiliently deformed radially outward of a virtual line corresponding to the inner circumferential surface of the cavity in a cross section including axis lines of the resilient plug (40; 120) and the cavity is specified as an outer virtual deforming portion (45A, 45B), an area of the inner lip (46A, 46B, 46C; 127) not resiliently deformed radially inward of a virtual line (31 L) corresponding to the outer circumferential surface of the wire (30; 110) in an undeformed state in the cross section including axis lines of the resilient plug (40; 120) and the wire (30; 110) is specified as an inner virtual deforming portion (47A, 47B, 47C), and at least a part of the inner virtual deforming portion (47A, 47B, 47C) is so arranged as to correspond to only a part of the outer virtual deforming portion (45A, 45B) in a longitudinal direction, characterized in that the first inner lip (46A; 127) being the foremost lip is so arranged such that a part of the front end side of the first inner virtual deforming portion overlaps with a rear end portion of the crimping piece.