We may say that a station is isolated when it is not affected by Hertzian waves other than those it desires to receive; but that a station overhears when it can, if it chooses, pick up communications not intended for it, or cannot help receiving them against its will.
"Hertzian Wave Wireless Telegraphy"
John Ambrose Fleming
If any overhears that message, he will never know it to be a warning.
"By What Authority?"
Robert Hugh Benson
She picks up bits of conversation which she overhears and which settle in her subconscious mind, until they later come to her consciousness in a way for which she cannot account.
"Psychology and Social Sanity"
Hugo Münsterberg