Just because this man does not drink constantly, does not mean he is not an alcoholic. ''Black-outs,'' (not remembering parts of a drinking evening) is proof of this.
You can not make him go to AA, a psychiatrist, detox, rehab or anywhere else, unless either he wants to, or the police r involved.
In the meantime take care of you. Go to Al-Anon, a group for the freinds & loved ones of alcoholics. You will learn that u r not alone. You can also take out some books on alcoholism, & gain knowledge on this subject. Remember that this is an illness (usually inherited). Also remember that the ill person needs to want to fix himself for it to work (other people r secondary--he needs to want to improve himself).
If things get too out of hand, be prepared. Know where u can go for safety (a friend who he does not know about, a safe house/battered women is shelter, etc.). This verbal abuse could turn into physical abuse, & u need to be prepared.