IPA: /ˈrɛzənəntli/
KK: /ˈrɛzənəntli/
In a way that produces a deep, clear, and continuing sound or effect.
The singer spoke resonantly, filling the room with her powerful voice.
Resonantly → It is formed from "resonare" (meaning to resound or echo) and the suffix "-ly" (meaning in a manner). The word "resonantly" means in a manner that produces a deep, full, or echoing sound.
Think of the word 'resound' to remember that 'resonantly' describes something that echoes or produces a deep sound.