Someone who does a great job yet receives little or no recognition for that. an unsung hero usually refrains from claiming too much in return for his/her efforts.
"Mikel Arteta was considered to be Arsenal FC's unsung hero this season."
by Behradeth June 5, 2013
An unsung hero is a person who commits an extraordinary act but does not receive recognition or proper respect. However, as the late George Carlin put it, "As soon as someone is identified as an unsung hero, they no longer are."
Pizza delivery people are the unsung heroes of the 21st century
by The Notorious J.O.G. January 27, 2017
mac is an unsung hero and carries marching band
by gingystingy August 15, 2021