undankbar
Translation
ungrateful, thankless
Examples
Sei nicht so undankbar!
Don't be so ungrateful!
Putzen ist eine undankbare Aufgabe.
Cleaning is a thankless task.
Grammar Patterns
predicatively: to be ungrateful He is very undankbar.
attributively: a thankless ... eine undankbare Aufgabe
undankbar ((gegenüber sb.dat)) to be ungrateful (towards sb.) She is undankbar towards him.
Similar Words
Synonyms: thankless; Antonyms: grateful
Etymology
Prefix 'un-' (not) + 'dankbar' (grateful). Literally 'un-grateful'.
Memory Tips
This is a straightforward one if you know 'dankbar'. The 'un-' prefix simply negates it, meaning 'un-thankful'.