Terminal and electric wire with terminal

An electric wire with a terminal comprising:

• an electric wire, and a terminal attached to the electric wire, and
• the terminal includes:
• a cylindrical box portion into which a mating terminal is inserted;
• and
• a spring portion which extends in a longitudinal direction from a front end portion to a rear end portion of the box portion and deforms in a deflection direction away from the mating terminal when the mating terminal inserted into the box portion comes into contact with the spring portion, wherein
• the spring portion has a pair of projections projecting outward in a width direction orthogonal to the longitudinal direction from a free end portion of the spring portion on a rear end side, and
• the box portion has a holding piece portion formed so as to project from a wall portion constituting the box portion toward the projection, and of which a tip end abuts on the projection to hold the spring portion in a state elastically deformed in the deflection direction from a natural state.