expression, i-adjective
old-fashioned; behind the times
Describes a person whose thinking, values, or attitudes are outdated. Often used critically or self-deprecatingly.
父は頭が古いから、私の仕事を理解してくれない。
My father is old-fashioned, so he doesn't understand my job.
そんな考え方は
That way of thinking might be called old-fashioned.