adj.

Impossible to alter: the unalterable season of bitter cold in Siberia.

unalterability un·al'ter·a·bil'i·ty or un·al'ter·a·ble·ness n.
unalterably un·al'ter·a·bly adv.

adjective

1. Incapable of changing or being modified: immutable, inalterable, inflexible, invariable, ironclad, rigid, unchangeable. See flexible/rigid.
2. That cannot be revoked or undone: irreversible, irrevocable. Idioms: beyond recall. See change/persist.

Note: click on a word meaning below to see its connections and related words.

The adjective has 3 meanings:

Meaning #1: not capable of being changed or altered
  Synonym: inalterable
  Antonym: alterable (meaning #1)

Meaning #2: (law) of a sentence; that cannot be changed

Meaning #3: remaining the same for indefinitely long times
  Synonym: changeless

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Dansk (Danish)
adj. - uforanderlig

Nederlands (Dutch)
onverwrikbaar

Français (French)
adj. - inaltérable

Deutsch (German)
adj. - unabänderlich

Ελληνική (Greek)
adj. - αναλλοίωτος, αμετάβλητος

Italiano (Italian)
inalterabile

Português (Portuguese)
adj. - inalterável

Русский (Russian)
устойчивый, не допускающий перемен

Español (Spanish)
adj. - inalterable, invariable, inmutable

Svenska (Swedish)
adj. - oföränderlig, går ej att ändra

中文（简体） (Chinese (Simplified))
不能改变的, 坚定不移的, 不变的

中文（繁體） (Chinese (Traditional))
adj. - 不能改變的, 堅定不移的, 不變的

한국어 (Korean)
adj. - 바꿀 수 없는, 여전한

日本語 (Japanese)
adj. - 変えがたい, 不変の

العربيه (Arabic)
‏(صفه) لا يمكن تغيره, حتمي‏

עברית (Hebrew)
adj. - ‮שאין לשנותו‬

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