There are other purposes, to be mentioned in a moment, for which a strike may be expedient; but a strike for wages is a clear case of a strife in which ultimate success is a complete test of the justifiability of the course of those who made the strife.
"What Social Classes Owe to Each Other"
William Graham Sumner
She saw by the lifting of his eyebrows that he was impressed, that he secretly admitted the justifiability of her summons to him.
"The Pretty Lady"
Arnold E. Bennett