sixth_sense

kuudes aisti extrasensory perception|Extrasensory perception; the ability to sense things by means other than the known bodily senses.
1914, w:Edgar Rice Burroughs|Edgar Rice Burroughs, s:At the Earths Core/Chapter V|At the Earth's Core'', Chapter V:

Among themselves they communicate by means of what Perry says must be a sixth sense which is cognizant of a fourth dimension.

Luckily, on evidence which I could never understand, Dominic detected something suspicious. Perhaps it was by virtue of some sixth sense that men born for unlawful occupations may be gifted with.

What Ghaznavi had considered animal intuition or some sixth sense was merely the razor-edged faculties and savage wit of the barbarian.