1. undeviating, unswerving

going directly ahead from one point to another without veering or turning aside

Example Sentences:
'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'

Synonyms

• undeviating

2. staunch, steadfast, unswerving

firm and dependable especially in loyalty

Example Sentences:
'a steadfast ally'
'a staunch defender of free speech'
'unswerving devotion'
'unswerving allegiance'

Synonyms

• staunch
• steadfast