noun
foolish retainer
Archaic noun referring to a retainer who is foolish or incompetent; used in historical or literary contexts.
愚臣の進言などお聞き入れいただけぬのも当然でございます。
It is only natural that you would not heed the advice of a foolish retainer like myself.
pronoun
Archaic humble first-person pronoun used by retainers when addressing their master; conveys self-deprecation.
愚臣が必ずやお役に立ってみせます。
I, your humble servant, will certainly prove useful to you.