ἐνδοιαστῶς
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
French (Bailly abrégé)
adv.
de manière douteuse.
Étymologie: ἐνδοιάζω.
Russian (Dvoretsky)
ἐνδοιαστῶς:
1 сомнительно: οὐκ ἐ. Thuc. несомненно;
2 нерешительно: οὐδ᾽ ἔτι ἐ. Her. без дальнейших колебаний.
English (Woodhouse)
(see also: ἐνδοιαστός) doubtfully