adj
thankless
adj
1
Not appreciated, despite effort put in.
"Cleaning up after everyone else is a thankless job."
"Being a referee is often a thankless task."
How to Use Thankless
Learner’s notesIn plain EnglishDescribes work or effort that goes unrewarded or unnoticed.
Common pairings
thankless task
thankless job
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Cleaning up after everyone else is a _____ job.
Etymology
From thank + -less, "without thanks."