towering mountains
屹 centers on mountains that rise steeply and stand tall, giving a sense of towering, imposing height.
屹 combines 山 (mountain) with 乞, which likely contributes the sound. The character expresses the idea of a mountain standing tall and steep.
The left side is a mountain 山, and the right side 乞 looks like a person kneeling and looking up. Picture someone kneeling at the base of a towering mountain, gazing up at its steep, imposing height.
For キツ, imagine a towering mountain so steep that it makes you say 'kits!' as you try to climb it: kits -> キツ, and the mountain stands tall and challenging.