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Definition of Unmodifiable
1. Adjective. Incapable of being modified in form or character or strength (especially by making less extreme). "These variations from custom are illogical, incomprehensible, and unmodifiable" 
Antonyms: Modifiable
Definition of Unmodifiable
1. Adjective. Incapable of being modified; immune to modification. ¹
¹ Source: wiktionary.com



