Uncle.

Don’t come the uncle over me. In Latin, “Ne sis patruus mihi” (IIrace: 2 Sat., iii. 88)—i.e. do not overdo your privilege of reproving or castigating me. The Latin notion of a patruus or uncle left guardian was that of a severe castigator and reprover. Similarly, their idea of a step-mother was a woman of stern, unsympathetic nature, who was unjust to her step-children, and was generally disliked.