perforce

• So, perforce, our hero could only have an audience with his lady The same glossing over of unpalatable truths--the same quiet-breathing counsel--the same tranquil sort of hopefulness--fully satisfied the lover that his cause was gained. —  Heart A Social Novel
• This Aoyama poses as a misogynist, takes a wife--perforce, and charges those of us who like women with effeminacy. —  Bakemono Yashiki (The Haunted House), Retold from the Japanese Originals Tales of the Tokugawa, Volume 2
• "He'll give Manuel enough dust to buy what I need; and I ought to let him know how we made out, anyway A blank leaf from the little memorandum book he always carried, and a bullet for pencil--perforce, the note was brief; but it told what he wanted: gold to buy a riding outfit, his pistols which Perkins had taken from him, and news of Bill's well-being. —  The Gringos
• These people are called criminals; and, perforce, they square accounts with Justice. —  Eve and David
• The men toiled in the mines and fields--perforce they were no more than slaves. —  The Iron Heel

Roget's II: The New Thesaurus