अचल

Etymology
.

Adjective

 * 1) unmoving, immutable
 * 2) constant
 * 3)  of a note, inalterable; not permitted to take, , etc. forms

Etymology
.

Adjective

 * 1) immovable, motionless

Proper noun

 * 1)  the deity Acala ("Immovable")

Noun

 * 1) a mountain, rock