Answer: deadletter

AnswerCrossword Clue
DEADLETTERAny law no longer enforced.
DEADLETTERP. O. problem.
DEADLETTERLaw no longer enforced.
DEADLETTERKind of office
DEADLETTERIt's undeliverable
DEADLETTERLaw still in effect but no longer enforced