What does reverberate mean?
1a : to become driven back. b : to become reflected. 2 : to continue in or as if in a series of echoes : resound a historic event that still reverberates today. reverberate. adjective.
Which pronunciation of either is correct?
Using English phonetics, [ EE-ther ] and [ AHY-ther ] are both correct. As a side note, giving “th” a phonetic Z (or S or F or D) sound is a common mispronunciation that can be corrected with practice.