Anything resonating echoes or vibrates deeply, like the resonating sound of your grandfather's laugh. You can also use this word figuratively, to describe something that you relate to — like a resonating speech that affects you personally.
You can also substitute words like resonant or reverberating for the adjective resonating — they all describe the full, rich sound and feeling of a bass voice or a drum beat. When something is emotionally resonating, it delivers a message that you can relate to on a personal level. Political candidates are always trying to communicate with voters in a resonating manner to gain their votes. Resonating comes from the Latin word resonantia, or "echo," which is rooted in resonare, "to sound again," from re-, "again," and sonare, "to sound."