Unbendable in a sentence as an adjective

For most part the lack of a crumple zone because the body is made of 'unbendable' steel.

It's easy to say, say no, but when times are tough you should trust yourself when coming to a conclusion on such an issue since there aren't any unbendable rules after all.

Unbendable definitions

adjective

marked by firm determination or resolution; not shakable; "firm convictions"; "a firm mouth"; "steadfast resolve"; "a man of unbendable perseverence"; "unwavering loyalty"

See also: firm steadfast steady stiff unfaltering unshakable unwavering