invariable (n.)
invariable (adj.)
- abiding
- accordant
- alike
- automatic
- balanced
- changeless
- consistent
- consonant
- constant
- continuous
- correspondent
- dreary
- dry
- dull
- dusty
- enduring
- equable
- equal
- eternal
- even
- everlasting
- fast
- fixed
- flat
- homogeneous
- humdrum
- immovable
- immutable
- inalterable
- incommutable
- inconvertible
- indefeasible
- inert
- inflexible
- invariant
- irretrievable
- irreversible
- irrevocable
- lasting
- level
- long-winded
- measured
- mechanical
- monolithic
- monotonous
- noble
- nonreturnable
- nonreversible
- ordered
- orderly
- permanent
- persistent
- prolix
- regular
- rigid
- robotlike
- set
- singsong
- smooth
- stable
- steadfast
- steady
- systematic
- tedious
- unalterable
- unaltered
- unbroken
- unchangeable
- unchanged
- unchanging
- undeviating
- undifferentiated
- undiversified
- uneventful
- unexceptional
- unfailing
- uniform
- unmodifiable
- unmodified
- unmovable
- unremitting
- unruffled
- unsusceptible
- unvaried
- unvarying
- unwavering
