This man has surrendered everything. He has no rights much less a safeword.
He is beneath a slave. He is owned property. Chattel. He is an object. Subject to his female owner’s every whim.
He has no importance. Barely an identity. Her will defines every second of his day. She may leave him alone, isolated and seemingly forgotten for days. Or spend hours exploring the nuances of inducing torment and enjoying his suffering.
No longer a man. Just an object.