undeviating (adj.)

• accordant
• alike
• automatic
• balanced
• changeless
• close
• consistent
• consonant
• constant
• continuous
• correspondent
• delicate
• direct
• equable
• equal
• even
• exact
• express
• faithful
• fine
• flat
• homogeneous
• horizontal
• immediate
• immutable
• incommutable
• inconvertible
• indefeasible
• inerrable
• inerrant
• inert
• infallible
• invariable
• irretrievable
• irreversible
• irrevocable
• lasting
• level
• lineal
• linear
• mathematical
• measured
• mechanical
• microscopic
• monolithic
• nice
• noble
• nonreturnable
• nonreversible
• one-way
• ordered
• orderly
• permanent
• persistent
• precise
• rectilineal
• rectilinear
• refined
• regular
• religious
• right
• rigid
• rigorous
• robotlike
• scientific
• severe
• smooth
• square
• stable
• steadfast
• steady
• straight
• straightaway
• straightforward
• streamlined
• strict
• subtle
• systematic
• true
• unalterable
• unaltered
• unbending
• unbent
• unbowed
• unbroken
• unchangeable
• unchanged
• unchanging
• uncurved
• undifferentiated
• undistorted
• undiversified
• unerring
• unidirectional
• uniform
• uninterrupted
• unmodifiable
• unremitting
• unruffled
• unsusceptible
• unswerving
• unturned
• unvaried
• unvarying
• upright
• vertical