harbinger
From LSJ
ἄπαγ' ἐς μακαρίαν ἐκποδών → get lost, buzz off, on yer bike, bug off, bugger off, clear out, clear off, take a hike, beat it, scram, get out of here, get outta here
English > Greek (Woodhouse)
substantive
messenger: P. and V. ἄγγελος, ὁ or ἡ, V. πομπός, ὁ.
alas you utter a word that is a harbinger of sorrow: V. αἰαῖ κακῶν ἀρχηγὸν ἐκφαίνεις λόγον (Eur., Hippolytus 881).