Unthankful Synonyms and Antonyms

ŭn-thăngkfəl
Not showing or feeling gratitude
(Adjective)
Synonyms:
  1. ungrateful
  2. thankless
  3. unappreciative
  4. unthanking
Antonyms:
  1. grateful
Not apt to be appreciated
(Adjective)
Synonyms:
  1. thankless
  2. unappreciated
  3. ungrateful