invariable

1. Not liable to or capable of change (synset 302515761)
   "an invariable temperature"; "an invariable rule"; "his invariable courtesy"
   also:

   • consistent - (sometimes followed by `with') in agreement or consistent or reliable
   • constant - steadfast in purpose or devotion or affection
   similar to:

   • changeless, constant, invariant, unvarying - unvarying in nature
   • hard-and-fast, strict - (of rules) stringently enforced
   • invariant - unaffected by a designated operation or transformation

1. A quantity that does not vary (synset 105867520)
   is a type of: quantity - the concept that something has a magnitude and can be represented in mathematical expressions by a constant or a variable
   subtypes: parameter, parametric quantity - a constant in the equation of a curve that can be varied to yield a family of similar curves
   same as: constant, constant quantity

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