someone who comes upon something after searching
"The finder decided to return the lost wallet to the owner immediately after spotting it in the park."
someone who is the first to observe something
"The eagle was the finder of the rabbit before anyone else noticed it in the tall grass."
optical device that helps a user to find the target of interest
"The photographer adjusted the camera's finder to frame the distant bird perfectly against the sunset sky."
One who finds or discovers something.
"The finder of the lost wallet returned it to its owner immediately after spotting it on the sidewalk."
In plain English: A finder is someone who discovers something that has been lost and brings it back to its owner.
"The finder got a reward for returning the lost wallet to its owner."
Usage: A finder is a person who locates or retrieves an object that has been lost or hidden. Use this term when referring to someone who physically recovers items like keys or wallets rather than discovering abstract concepts.
The word finder comes from Middle English and was formed by adding the suffix "-er" to the verb "find." It originally referred simply to someone who finds things, a meaning that remains unchanged in modern usage.