quiet
顗 centers on a state of quiet composure or solemn stillness. The given meaning 'quiet' points to a dignified, restrained calm rather than mere absence of noise.
顗 combines 豈 (likely contributing the sound) with 頁 (head), suggesting a dignified, quiet bearing. The exact historical development is uncertain.
The left side 豈 can be thought of as a ceremonial drum on a stand, and the right side 頁 is a head. Imagine a solemn ceremony where the drum is silent and every head is bowed in quiet reverence.
For ギ, picture a quiet gathering where everyone wears a formal gi (着物の衣) and maintains a dignified silence: gi -> ギ.