ἀγανακτεῖν
From LSJ
Δελφῖνα νήχεσθαι διδάσκεις: ἐπὶ τῶν ἐν ἐκείνοις τινὰ παιδοτριβούντων, ἐν οἷς ἤσκηται → Teaching dolphins to swim: is applied to those who are teaching something among people who are already well versed in it
Greek > English (Woodhouse Verbs Reversed)
(see also ἀγανακτέω): dislike, lament, regret, be angry at, be angry with, be angry, be annoyed, be averse to, be chagrined, be disgusted with, be disgusted, be displeased, be dissatisfied with, be dissatisfied, be impatient of, be indignant, be offended, be sore, be vexed at, be vexed, feel oneself aggrieved, frown on, grieve for, grumble at, ill brook, object to, scowl on, take exception to, take it ill, take offence at, take offence, view with disfavor, view with disfavour
Lexicon Thucydideum
indignari, to be displeased, be angry, 8.43.4, 8.66.4.
