thankless

Definitions

Not feeling or expressing gratitude.

Not appreciated or rewarded; thankless work.

Examples

Cleaning the entire house before the guests arrived felt like a thankless task when they didn't even notice the effort.

He spent years in a thankless job, working long hours without ever receiving a word of appreciation from his manager.

Synonyms

unappreciated ungrateful unrewarding fruitless unacknowledged thankless task

Antonyms

appreciated rewarding gratifying fulfilling acknowledged worthwhile