This verb "to commit adultery" is in the passive voice.
Active voice:
μοιχεύω (moikheúō) - "to commit adultery"
Definition: Engaging in sexual relations with someone other than one's spouse, violating the commitment of marriage.
Passive voice:
μοιχεύομαι (moikheúomai) - "to be adulterated" (reflexive/passive form)
Definition: Being involved in adultery or having committed adultery. This form indicates that the subject is the recipient of the action rather than the doer.