unvarying

Adjective

unvarying (comparative more unvarying, superlative most unvarying)

1. Persistent, constant, changeless.
   • You can be sure of our unvarying attention.
   • In the United States, where the railways are 90 per cent. dieselised today, diesel-electric power is the unvarying rule for independent locomotive units, and the only motive power exceptions are the highly successful 600-h.p. diesel-hydraulic railcars of the Budd "RDC" type, of which between 300...1958 April, Cecil J. Allen, “British Locomotive Practice and Performance”, in Railway Magazine, page 268

   Synonyms:

   constant, nonchanging, unchanging, changeless, equal, static, stationary, unaltering

2. Lacking variety; having a uniform character.
   • The prizewinning carrots were of an unvarying size.

   Synonyms:

   stable, consistent, equable, equal, even, even-keeled, monotonous, regular, samely, steady