adj. Function: adjective
1 not inclined to give thanks FF1C; a thankless guest FF1E;
Synonyms: unappreciative, ungrateful, unthankful
Related Words: self-centered; careless, heedless, thoughtless; unappreciative, ungrateful, unmindful
Contrasted Words: appreciative, grateful, mindful; careful, heedful, thoughtful
Antonyms: thankful
2 not likely to obtain thanks FF1C; a thankless job FF1E;
Synonyms: unappreciated, ungrateful, unthankful
Related Words: disagreeable, distasteful, unpleasant; miserable, wretched
Contrasted Words: thankworthy