Adjective
unswervable (comparative more unswervable, superlative most unswervable)
Not swervable.
Larkin the man is separated from us historically by changes in the self. For his generation, you were what you were and that was that. It made you unswervable and adamantine. My father had this quality. I don't. None of us do. There are too many forces at work, there are too many fronts to cover. Martin Amis