fail vi
1: to be or become inadequate or unsuccessful esp. in fulfilling certain formal requirements
even though one or more terms are left open a contract for sale does not fail for indefiniteness — Uniform Commercial Code
2: to become bankrupt or insolvent
vt: to leave undone or neglect to do
fail to appear in court
fail to read a contract
Merriam-Webster’s Dictionary of Law. Merriam-Webster. 1996.