irreplaceable, irreversible

convertible

changes, alterations, upheaval, mutations, reshuffling

the becoming changed or altered; change

unfit, unable, incapable, undeserving, unqualified, unworthy

not worthy of trust

not to be rejected

unworthy of attention, consideration

unreliable, untrustworthy, undependable, unstable

unpardonable, unforgivable, irremissible, inexcusable

irreparable, irreplaceable

intolerable, unbearable, which cannot be tolerated

for which there is no need to worry

beyond consideration, unimaginable, incredible, Metaphorically: extraordinary

unforgettable

unchangeable

irretrievable, irreclaimable

which can't be sold