unsung
adj. C1 Advanced US //ənˈsəŋ// UK //ʌnsˈʌŋ// un·sung
adj. describing someone who has done great work but has not received any public praise or recognition.
adj. describing a person or thing that has performed a significant role or achieved notable success without receiving public acclaim or acknowledgment.
The unsung heroes of the team worked late to finish the project.
While the lead actor received all the awards, the unsung heroes of the film were the special effects team.
History often overlooks the unsung contributions of the support staff, whose tireless efforts are essential to the success of any major scientific expedition.
From un- + sung.