חָגָּא

From LSJ

Ἡ γλῶσσ' ἁμαρτάνουσα τἀληθῆ λέγει → Inesse linquae veritas lapsae solet → Die Zunge, wenn sie in die Irre geht, spricht wahr

Menander, Monostichoi, 228

English (Strong)

from an unused root meaning to revolve (compare חָגַג); properly, vertigo, i.e. (figuratively) fear: terror.