Definitions:
Whisper—1. The
utterance of words in a low soft voice; a speaking under one’s breath.. 2. A
whispered word, phrase, remark or speech. 3. Something told secretly or
privately.
Overheard—To hear
when one is not meant to hear.
Barnhart, Clarence L., Editor in Chief, The World
Book Dictionary. Chicago, Illinois: Field Enterprise Educational Corporation,
1974