saner

/S EY1 N ER0/
adjective
  1. 1

    Being in a healthy condition; not deranged; thinking rationally.

    โ€œa sane mindโ€

  2. 2

    Mentally sound; possessing a rational mind; having the mental faculties in such condition as to be able to anticipate and judge the effect of one's actions in an ordinary manner.

    โ€œa sane personโ€

  3. 3

    Rational; reasonable; sensible.

    โ€œTry to go to bed at a sane time before your exams.โ€

Source: https://en.wiktionary.org/wiki/sane, https://en.wiktionary.org/wiki/saner