ἐκκρήμνασθαι

From LSJ

ἀγωνίζεσθαι, ἐπιζητεῖν, εὑρίσκειν καί μή εἴκειν → to strive, to seek, to find, and not to yield (Tennyson, Ulysses)  

Source

Greek > English (Woodhouse Verbs Reversed)

cling to, hang upon (see also: ἐκκρήμναμαι)