seriousness
From LSJ
ἑωλοκρασίαν τινά μου τῆς πονηρίας κατασκεδάσας → having discharged the stale dregs of his rascality over me
earnestness: P. and V. σπουδή, ἡ.
gravity, importance: P. and V. μέγεθος, τό.
terribleness: P. δεινότης, ἡ.
of looks: P. and V. τὸ σεμνόν.