often
Ἐς δὲ τὰ ἔσχατα νουσήματα αἱ ἔσχαται θεραπεῖαι ἐς ἀκριβείην, κράτισται -> For extreme diseases, extreme methods of cure, as to restriction, are most suitable.
Corpus Hippocraticum, Aphorisms 1.6.2
P. and V. πολλάκις θαμά (Plato), P. συχνόν, Ar. and P. πυκνά, Ar. and V. πολλά.
how often, indirect: P. ὁσάκις.
as often as possible: P. ὡς πλειστάκις.