unappreciated

Từ điển WordNet v3.1 - WordNet Dictionary

adjective

1. not likely to be rewarded
- grading papers is a thankless task
• Syn:
thankless, ungratifying
• Similar to:
unrewarding
2. having value that is not acknowledged
• Syn:
unsung, unvalued
• Similar to:
unacknowledged

• Từ đồng nghĩa / Synonyms:
  unsung, unvalued, thankless, ungratifying