high, steep
峻 centers on extreme steepness and height, describing mountains, cliffs, or anything sharply elevated. The idea extends naturally to severity or strictness, as in a steep, unyielding attitude.
峻 combines 山 (mountain) with 夋, which likely contributes the sound and the idea of something towering or severe. The exact historical development of 夋 is uncertain, but the mountain radical clearly anchors the meaning to steep terrain.
A mountain 山 that rises sharply and steeply, like a wall of rock. The right side 夋 looks like a person climbing with difficulty, emphasizing the severe incline.
For シュン, imagine a steep mountain trail that makes you shun the climb: shun -> シュン, and the mountain 山 stands steep and forbidding.
steep; sharp
rigorous distinction
drastic aperient
strict; stern; rigorous; severe
tall and steep
steep peak; steep ridge; high rugged mountain
steep peak; steep ridge; high rugged mountain
refusing flatly; rejecting sternly
severe; harsh; rigorous; trenchant; scathing; sharp; incisive; cutting
severe (personality); unaffected by love
steep; precipitous
steep; precipitous