διαμαρτάνειν
From LSJ
κρεῖττον εἶναι φιλοσόφως ἀποθανεῖν ἢ ἀφιλοσόφως ζῆν → that it is better to die in manner befitting a philosopher than to live unphilosophically
Greek > English (Woodhouse Verbs Reversed)
(see also διαμαρτάνω): miss, be mistaken, be wrong about things, be wrong, fail in attaining, fail in hitting, fail in, make a false step, make a mistake, meet with a refusal, not succeed in, not to meet, be at fault
Lexicon Thucydideum
aberrare, to wander from, deviate, 1.106.1, 7.44.8,
frustrari, to baffle, disappoint, 2.78.1.