DNF
adj.β Β«The worst finish has been dropped in computing the standing in classes that have completed five or more races): dns–did not start; pms–premature start; dnc–did not compete; dnf did not finish.Β» ββWinds helpful to U.S. sailor in CORK event” Globe and Mail (Toronto, Can.) Aug. 30, 1978. (source: Double-Tongued Dictionary)