misthank means to express one's discontent with someone's behavior. Lexicurio rates it Sui generis — a strength score of 100 out of 100.
Etymology
From mis- + thank.
verb
- To express one's discontent with someone's behavior.“I had (in Harbour) heav'd mine Anchor o're, And ev'n already set one foot a-shoar; When lo, the Dolphin, beating 'gainst the bank, 'Gan mine obliuion moodily mis-thank:”
- To thank or give credit to someone for something they did not do.“If only I hadn't gotten drunk and raced around lying and misthanking .”