IPA: /ˈkwaɪətli/
KK: /ˈkwaɪətli/
In a way that does not make much noise; softly or silently.
She spoke quietly so as not to disturb anyone.
Quietly → It is formed from "quiet" (from Latin "quietus", meaning at rest or calm) and "-ly" (a suffix used to form adverbs). The word "quietly" means in a manner that is calm or at rest, without noise.
Think of being 'calm' ('quiet') and doing something 'in that manner' ('-ly'). This helps you remember that quietly means to do something in a calm or silent way.