Stark has 11 different meanings across 3 categories:
The language spoken in the Ender's Game series, which is nearly identical to American English.
"The crew communicated using stark during their mission aboard the starship Ender."
"The stark difference between their opinions was evident to everyone in the room."
To stiffen.
"The cold wind made his jaw go stark as he shivered in silence."
without qualification; used informally as (often pejorative) intensifiers
"an arrant fool"
"a complete coward"
"a consummate fool"
"a double-dyed villain"
"gross negligence"
"a perfect idiot"
"pure folly"
"what a sodding mess"
"stark staring mad"
"a thorough nuisance"
"a thoroughgoing villain"
"utter nonsense"
"the unadulterated truth"
Hard, firm; obdurate.
"The old oak tree stood stark and unmoving against the biting wind."
starkly; entirely, absolutely
"The contrast between the bright sun and the dark shadow was stark."
In plain English: Stark means doing something with no extra details, just straight to the point without any softening words.
"The stark contrast between light and dark made the image unforgettable."
A surname.
"The Stark family crest was displayed prominently on the castle gate."
Stark entered English from Old English as a word meaning "stiff" or "strong." Its original sense of rigidity has remained consistent throughout its history.