unswerving (
http://definr.com/unswerving)
adj 1: 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" [syn:
undeviating]
2: firm and dependable especially in loyalty; "a steadfast
ally"; "a staunch defender of free speech"; "unswerving
devotion"; "unswerving allegiance" [syn:
steadfast,
staunch]