thankless

When you do something that doesn't earn you any gratitude, you can call it thankless. Handing out parking tickets and giving unsolicited advice can both be thankless jobs.

If no one says, "Thanks!" despite your hard work, your task was a thankless one. You can also describe the person who doesn't express gratitude that way—Shakespeare's King Lear famously did this by saying, "How sharper than a serpent's tooth it is to have a thankless child!"

Definitions of thankless
1

adj not feeling or showing gratitude

“"How sharper than a serpent's tooth it is / To have a thankless child!"- Shakespeare”
Synonyms:
ungrateful, unthankful
unappreciative
not feeling or expressing gratitude
Antonyms:
grateful, thankful
feeling or showing gratitude
appreciative
feeling or expressive of gratitude
glad
feeling happy appreciation
show more antonyms...

adj not likely to be rewarded

“grading papers is a thankless task”
Synonyms:
unappreciated, ungratifying
unrewarding
not rewarding; not providing personal satisfaction

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