Still, a highly irregular period is usually a sign that something else isn't right in your body.. Take note of these 10 things that could be messing with your menstrual cycle, and see your doc if anything seems too far off. 1 of 12. View as one page.
immutable - not subject or susceptible to change or variation in form or quality or nature; the view of that time was that all species were immutable, created by God
carved in stone - no longer changeable; the agreement is not yet set in stone. set in stone. unchangeable - not changeable or subject to change; a fixed and unchangeable part of the germ plasm-Ashley Montagu; the unchangeable seasons; one of the unchangeable facts of life.