A weak person who yields to the temptation of denying himself a pleasure. A total abstainer is one who abstains from everything but abstention, and especially from inactivity in the affairs of others.

Said a man to a crapulent youth:  "I thought
    You a total abstainer, my son."
"So I am, so I am," said the scapegrace caught--
    "But not, sir, a bigoted one."