Greek word
hēsýchios
ἡσύχιος
What it means
properly, keeping ones seat, i.e. still
properly, keeping one's seat (sedentary), i.e. (by implication) still (undisturbed, undisturbing)
Where it comes from
a prolonged form of a compound probably of a derivative of the base of hedraîos (ἑδραῖος) and perhaps échō (ἔχω)