Synonyms: undeviating
Definition: used of values and principles; not subject to change; steady
Usage: undeviating loyalty
Similar words: reliable, dependable
Definition: worthy of reliance or trust
Usage: a reliable source of information; a dependable worker
Synonyms: undeviating, unswerving
Definition: going directly ahead from one point to another without veering or turning aside
Usage: 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
Similar words: direct
Definition: direct in spatial dimensions; proceeding without deviation or interruption; straight and short
Usage: a direct route; a direct flight; a direct hit