Definitions
not feeling or showing gratitude
Word origin
From Middle English thankles, equivalent to thank + -less.
Used in a sentence
“One indispensable and thankless Unesco task is organizing tsunami warnings systems and pushing for tsunami education on risky shores around the world.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Offering no appreciation”9 letters
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