прочно
From LSJ
τὸ μὲν εὖ πράσσειν ἀκόρεστον ἔφυ πᾶσι βροτοῖσιν → all mortals have by nature an insatiable appetite for success, our mortal state with bliss is never satiate, success is something for which humanity is insatiatable
συγκόλλως, στερεῶς, πύκα, εὐκρατῶς, καταπαγίως, βεβαίως