unchangeable

adjectives

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"
unchangeable
is derived from
unchangeableness
is derived from
unchangeability
antonym
changeable
is similar to
remaining the same for indefinitely long times
changeless, unalterable
is similar to
of persons; not subject to change
"a confirmed bachelor"; "a confirmed invalid"
confirmed
is similar to
incapable of being changed or moved or undone; e.g. "frozen prices"
"living on fixed incomes"
fixed, frozen
is similar to
no longer changeable
"the agreement is not yet set in stone"
carved in stone, set in stone
is similar to
showing little if any change
"a static population"
stable, static, unchanging
see also
steadfast in purpose or devotion or affection
"a man constant in adherence to his ideals"; "a constant lover"; "constant as the northern star"
constant
see also
continuing or enduring without marked change in status or condition or place
"permanent secretary to the president"; "permanent address"; "literature of permanent value"
lasting, permanent
is an attribute of
the quality of being changeable; having a marked tendency to change
"the changeableness of the weather"
changeability, changeableness