invariable

Meanings

1. 1
   adj

   not liable to or capable of change

   an invariable temperature

2. 2
   adj

   Not variable; unalterable; uniform; always having the same value.

   Physical laws which are invariable.

3. 3
   adj

   That cannot undergo inflection, conjugation or declension.

   The French adjective marron ‘brown’ is invariable: it does not take the usual s in the plural.

4. 4
   noun

   a quantity that does not vary

5. 5
   adj

   Constant.

6. 6
   noun

   Something that does not vary; a constant.

Etymology

From in- + variable.