still more, still less
况 centers on comparison that intensifies a state: something is still more or still less than expected. It marks a degree beyond what was already mentioned.
况 is a variant form of 況. The right side 兄 likely contributes the sound, while the left side 冫 (ice) may have been used to suggest a cold, intensified state, though the exact historical development is uncertain.
The left side 冫 (ice) makes things colder, and the right side 兄 (older brother) is bigger. Imagine an older brother standing on ice, making the cold feel still more intense.
For キョウ, picture the older brother (兄) shouting 'KYOU!' as he slips on the ice, making the situation still more chaotic. The shout 'KYOU!' directly cues キョウ.