ominously: P. and V. κακῶς.
extraordinarily: P. θαυμαστῶς, Ar. and P. θαυμασίως; see extraordinarily.
terribly: P. and V. δεινῶς.
beyond measure: V. ὑπερμέτρως, ὑπέρφευ, Ar. and P. ὑπερφυῶς.