lamentably
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
English > Greek (Woodhouse)
adv.
P. and V. λυπηρῶς, ἀλγεινῶς, πικρῶς, ἀθλίως, οἰκτρῶς. Unfortunately: P. and V. κακῶς, δυστυχῶς; see unfortunately. Terribly: P. and V. δεινῶς.