נָחַשׁ
From LSJ
ἀγωνίζεσθαι, ἐπιζητεῖν, εὑρίσκειν καί μή εἴκειν → to strive, to seek, to find, and not to yield (Tennyson, Ulysses)
English (Strong)
a primitive root; properly, to hiss, i.e. whisper a (magic) spell; generally, to prognosticate: X certainly, divine, enchanter, (use) X enchantment, learn by experience, X indeed, diligently observe.