- undeviating, unswerving - going directly ahead from one point to another without veering or turning aside; "some people see evolution as an undeviating upward march from simple organisms to the very complex"; "a straight and narrow tree-lined road unswerving across the lowlands"
Antonym: indirect (indirect, via direct)
- undeviating - used of values and principles; not subject to change; steady; "undeviating loyalty"
Antonyms: unreliable, undependable (indirect, via reliable, dependable)
Antonyms: unreliable, undependable (indirect, via reliable, dependable)