Which ofttimes may succeed, so as perhaps Shall grieve him, if I
fail not.
Milton.
9. To become unable to meet one's engagements; especially, to be unable
to pay one's debts or discharge one's business obligation; to become
bankrupt or insolvent.
Fail (?), v. t. 1. To be wanting to ; to be insufficient for; to
disappoint; to desert.
There shall not fail thee a man on the throne.