toughling

The opposite of weakling.

A strong and resilient person despite their appearance and attitude.

M: All you did was a day of decorating - you're such a weakling!
D: Actually I painted seven doors, skirting, all the wood, the floor and the wall. I AM TOUGHLING

M: He is so small and weak, look at him.
J: Actually he is a black belt karate champ
M: Wow, what a toughling.

by MikeRITE April 05, 2013