δῖψαι
From LSJ
ψυχῆς ἀγῶνα τὸν προκείμενον πέρι δώσων → to stand the appointed trial for his life, to stand the appointed struggle for life and death
English (LSJ)
βλάψαι, Hsch.; cf. δίψιος 1. fin.
Frisk Etymological English
Grammatical information: v.
Meaning: βλάψαι H.
Origin: XX [etym. unknown]
Etymology: DELG suggests that the form was coined by grammarians to explain δίψιον which was explained as βλαπτικόν (H.) or βλαβερόν (Ap. Soph.), and adds: "cf. encore Hsch. sous δίψιον Ἄργος avec S. fr. 296."