Merriam-Webster's Word of the Day for April 28, 2016 is:
invincible \in-VIN-suh-bul\ adjective
: incapable of being conquered, overcome, or subdued
"He calls the mixture Bulletproof coffee. Drink it, the name implies, and you'll feel invincible." — Gordy Megroz, Bloomberg Businessweek, 4 May 2015
"Eventually he stops terrorizing poor Holly Hunter and retires to Superman's spaceship … where he uses the Krypton Siri to create the invincible supervillain whom Batman and Superman will have to fight after they're done throwing each other through various walls…." — Rob Havilla, Deadspin, 23 Mar. 2016
Did you know?
The origins of invincible are easily subdued. The word derives, via Middle French, from Late Latin invincibilis—a combination of the negative prefix in- with vincibilis, an adjective meaning "conquerable," from the Latin verb vincere, "to conquer." Other descendants of vincere in English include convince, evince, vanquish, and even victor. Vincere also gave English vincible, meaning (unsurprisingly) "capable of being overcome or subdued," though it is significantly less common than invincible.