adjective
1.
Synonyms: thankless 1, unappreciative, unthankful
Antonyms: grateful
2.
Synonyms: thankless 2, unappreciated, unthankful
3.
Synonyms: offensive , disgusting, foul, hideous, horrible, loathsome, repellent, repugnant, repulsive, revolting
UNGRATEFUL
Meaning of UNGRATEFUL in English
Merriam Webster. Collegiate thesaurus English vocabulary. Английский энциклопедический словарь тезаурус. 2003