invariable

[in-vair-ee-uh-buh l] /ɪnˈvɛər i ə bəl/
adjective
1.
not variable; not changing or capable of being changed; static or constant.
noun
2.
something that is invariable; a constant.
Origin
1400-50; late Middle English; see in-3, variable
Related forms
invariability, invariableness, noun
invariably, adverb
Synonyms
1. unalterable, unchanging, changeless, invariant, unvarying, immutable.
Antonyms
1. changing.
Examples from the web for invariable
  • It may mark the recurrence of a period of increased sun spots, with the invariable accompaniment of increased solar radiation.
  • What mattered was their inevitable and invariable violation of all those agreements.
  • Entropy is the invariable feature of every investigation.
  • Extravagant patterning camouflages the invariable chill.
  • There are also fixed costs involved that are invariable for the amount of data exchanged, and other costs that are relative.
  • In the payment of such a note, gold would appear to be more invariable in its value than silver.
  • It seemed that grotesque ugliness was an invariable character of these islanders.
  • And then there are the invariable disputes about a card's condition.
British Dictionary definitions for invariable

invariable

/ɪnˈvɛərɪəbəl/
adjective
1.
not subject to alteration; unchanging
noun
2.
a mathematical quantity having an unchanging value; a constant
Derived Forms
invariability, invariableness, noun
Word Origin and History for invariable
adj.

early 15c., from Old French invariable (14c.) and directly from Medieval Latin invariabilis, from in- "not, opposite of" (see in- (1)) + variabilis (see variable). Related: Invariably.