We're what I'd call mandatory friends.

The French government now asked to be allowed to march into Spain, as Austria had marched into Naples, as the mandatory of the powers, for the purpose of putting a stop to a state of things perilous alike to herself and to all Europe.

In areas where Jenner's techniques were available, infections fell, and when inoculation became mandatory, they plummeted.

1 The writ is a remedial mandatory writ of right existing by the common law, i.e.

In 1907 there were about 960,000 volumes in public township libraries for which a law of 1887 had made provision; since 1895 the formation of such libraries has been mandatory, and books, chosen by the county superintendent, are bought from a fund of io cents for every person of school age in towns, villages and cities of the fourth class.