τλήτω

From LSJ

κρεῖττον εἶναι φιλοσόφως ἀποθανεῖν ἢ ἀφιλοσόφως ζῆν → that it is better to die in manner befitting a philosopher than to live unphilosophically

Source

French (Bailly abrégé)

3ᵉ sg. impér. ao.2 de τλάω.