noun
my wife; my foolish wife
Humble term used when speaking about one's own wife to someone outside the family. The literal meaning 'foolish wife' is self-deprecating and not taken literally.
愚妻がいつもお世話になっております。
My wife is always indebted to you for your kindness.
愚妻の手料理ですが、どうぞお召し上がりください。
It's just my wife's home cooking, but please help yourself.