Old habits may die hard, but sometimes the bigger they are, the harder they fall. Many quaint twentieth-century habits, like tobacco smoking and casual sexual assault, may soon fall into desuetude, or disuse.
From the Latin for 'I've grown unaccustomed to your face'.
When Harvey said, "but I'm used to it" to the nymphet he was groping, he was right there in 1974, in his dreams. For goodness' sake, can somebody inform Harvey that it's 2017 and you have to pay actual money for it now!
A law which is not enforced, or openly flouted, for ages can also fall into desuetude. Like that stupid old law prohibiting the droving of sheep on the Sydney Harbour Bridge. Nobody has ever been charged!
CONFUSED BY EXCESSIVE VOCABULARY OPTIONS?
PETER THE PROOFER REFUSES CONFUSION!