שְׁגָגָה

From LSJ

ὀρχούμενός τις καὶ τὴν τοῦ Κρόνου τεκνοφαγίαν παρωρχεῖτο → a dancer was presenting Kronos who devoured his children, an actor portrayed Kronos who devoured his children

Source

English (Strong)

from שָׁגַג; a mistake or inadvertent transgression: error, ignorance, at unawares; unwittingly.