Oxford English Dictionary

Lucy Cacciatore and Savannah Ampuero

Vouchsafed- (verb) to generously give something to someone - originated in Middle Ages, but its meaning has not changed

Stratagem- (noun) a sneaky plan, usually to outsmart an opponent- originated in15th century, originally used to denote a military ploy

Pennon- (noun) less common term for "pennant," which is the tapering on a flag or a ship- derived from Latin word "penna," meaning "feather"