What is the origin of the idiom "I'm all ears"
I couldn't find any other information than it dates to the 1700s.
http://dictionary.reference.com/browse/all%20ears
The idiom "I'm all ears" means to be fully attentive and ready to listen. It suggests that you are giving your undivided attention to someone or something.
To understand the origin of this idiom, we can break it down. The phrase "I'm all" indicates that you are completely dedicated or focused on something. And the word "ears" refers to the act of listening or hearing. So, when you say "I'm all ears," you are letting the other person know that you are giving them your complete attention and are ready to listen to what they have to say.
As for the actual origin of this idiom, it is difficult to pinpoint a specific source. Idioms like these often evolve over time through common usage. In this case, "I'm all ears" likely originated from the understanding that ears are the primary organs for listening, and by saying this phrase, you are emphasizing your willingness to listen intently. It has become a popular and idiomatic way to convey your attentiveness in various English-speaking cultures.
In summary, the idiom "I'm all ears" expresses a willingness to listen attentively, but its exact origin is uncertain, as it likely evolved through common usage and became a widely recognized phrase.