G5594 ψύχω

to breathe (voluntarily but gently, thus differing on the one hand from G4154 (πνέω), which denotes properly a forcible respiration; and on the other from the base of G109 (ἀήρ), which refers properly to an inanimate breeze), i.e. (by implication, of reduction of temperature by evaporation) to chill (figuratively)

wax cold

a primary verb;