下司

Etymology
The compound of 下 (inferior) + 司 (official).

Noun

 * 1)  an inferior official; a petty official
 * 2) an inferior person; a petty person
 * 下司の後知恵.
 * A petty person becomes wiser after an event.
 * 1) a male dog (figuratively, to express one's disgust)