comprehension, sane, sagacity, sense, wit, acumen, intelligence, marble, reason, soundness, lucidness, understanding, mind, prudence, reason, saneness.
" I doubt not the sanctity of the Father Malagrida, Donna Leonora, but I have reason to doubt his sanity.
Of her own sanity
she had no doubts for her mind was made of sterner stuff and would therefore be less easily affected.
I didn't have to worry a thing except for their sanity.