1. (adj)immutable, changeless not subject or susceptible to change or variation in form or quality or nature Synonyms: changeless, unvarying, constant, immutable, invariant, unalterable Antonyms: variable, changeful, changeable
3. (adj)changeless, unalterable remaining the same for indefinitely long times Synonyms: unalterable, unvarying, constant, immutable, changeless, invariant, inalterable Antonyms: changeful, variable, changeable
Synonyms, Thesaurus & Antonyms of 'changeless'
English Synonyms and Antonyms
1. changeless Durable (L. durus, hard) is said almost wholly of material substances that resist wear; lasting is said of either material or immaterial things. Permanent is a word of wider meaning; a thing Synonyms: permanent, abiding, enduring, lasting, steadfast, changeless, fixed, perpetual, unchangeable, constant, immutable, persistent, unchanging, durable, invariable, stable
Synonyms for changeless 
