in his right mind

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ThesaurusAntonymsRelated WordsSynonymsLegend: his right mind - behaving responsibly
sane - mentally healthy; free from mental disorder; "appears to be completely sane"
References in classic literature ?
Suppose that a friend when in his right mind has deposited arms with me and he asks for them when he is not in his right mind, ought I to give them back to him?
I moved away, cogitating, and at the same time keeping an eye out for any chance passenger in his right mind that might come along and give me some light.
I said I had never heard of a man in his right mind going out to fight a duel without first making his will.
If Monty were here and in his right mind, I think we could come to terms, but, when I saw him last at any rate, he was quite incapable, and he might become a tool to anything.
Tudor, he said, was very sick, lying unconscious for days at a time, and, when in his right mind, too weak to help himself.