Warlock sounds like too much Harry Potter too me
A male witch is still a witch. He can also be a priest, shaman, pagan, shapeshifter, etc.
A male who seriously considers himself a warlock is either someone you want nothing todo with or too new/young to understand what he is saying.
Your word is what binds you and marks you as witch - a warlock is an oath breaker whose word can not be trusted.