Adverb
In an infallible manner; certainly; unfailingly; unerringly.
Source: Webster's dictionaryThe fear of death often proves mortal, and sets people on methods to save their Lives, which infallibly destroy them. Joseph Addison
Five enemies of peace inhabit with us - avarice, ambition, envy, anger, and pride; if these were to be banished, we should infallibly enjoy perpetual peace. Petrarch
If there be such a thing as truth, it must infallibly be struck out by the collision of mind with mind. William Godwin
Croft had an instinctive knowledge of land, sensed the stresses and torsions that had first erupted it, the abrasions of wind and water. The platoon had long ceased to question any direction he took; they knew he would be right as infallibly as sun after darkness or fatigue after a long march. Norman Mailer
Appetite is essentially insatiable, and where it operates as a criterion of both action and enjoyment (that is, everywhere in the Western world since the sixteenth century) it will infallibly discover congenial agencies (mechanical and political) of expression. Marshall McLuhan
A mind of moderate capacity which closely pursues one study must infallibly arrive at great proficiency in that study. Mary Shelley