δᾶ

A. οἰοῖ δᾶ φεῦ A. Eu. 874; ἄλεῡ ἆ δᾶ Id. Pr. 567; ὀτοτοτοτοῖ ποποῖ δᾶ Id. Ag. 1072; οὐ δᾶν no by earth, Theoc. 4.17 (v.l. γᾶν):—prob. an exclamation of horror.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
An open-access project