Lever-fitting connector

1. A lever-fitting connector, comprising:

a first connector having a provisionally-retaining cancellation portion;

a second connector having a provisionally-retaining portion; and

a rotatable lever which engages the first connector with the second connector,

wherein the rotatable lever includes a provisionally-retaining arm for provisionally retaining the lever with the second connector to abut on the provisionally-retaining portion;

wherein the provisionally-retaining arm extends to form a slit between the provisionally-retaining arm and an edge of the rotatable lever;

wherein a width of the slit is smaller than an elastic range of the provisionally-retaining arm at which the provisionally-retaining arm bends toward the edge; and

wherein the abutment of the provisionally-retaining arm on the provisionally-retaining portion is cancelled when the provisionally-retaining arm is bent outwardly by the provisionally-retaining cancellation portion, thereby allowing the rotatable lever to be rotated.

2. The lever-fitting connector according to claim 1 , wherein a width of the slit between the edge of the rotatable lever and a head of the retaining arm is smaller than a width of the slit between the edge of the rotatable lever and a root of the retaining arm.

3. The lever-fitting connector according to claim 1 , wherein a convex portion is formed on at least one of the retaining arm and the edge of the rotatable lever to narrow the width of the slit.