Sane is a synonym of underanged.
As a verb sane
As an adjective underanged is
not deranged or disrupted.
Being in a healthy condition; not deranged; acting rationally.
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.
- a sane mind
Rational; reasonable; sensible.
- a sane person
- Try to go to bed at a sane time before your exams.
Not deranged or disrupted.
* 1865 , William Kirby, William Spence, An introduction to entomology (page 473)
- The wings of many male butterflies, hawk-moths, and moths, are distinguished by a remarkable apparatus for keeping them steady and underanged in their flight.