Yep. But without a comprehensive definition or at least a framework of categorization (ethics), the whole point of good or evil is a relative aspect within a cloudy topic.
Good or evil are such subjective terms, see any heated political debate for examples.

To make it a little harder, you may try considering some of history's worst monsters having nothing but a wretched and perverted perception of what is "good" and "evil".
Take stalinists for starters. And their secret police., the Cheka. Or any other war mongering bunch of torturers and killers. Many of them were probably convinced to do good for the sake of their country. With the means having to adapt to the noble purpose of course.
You know better? Thats what THEY said.

The term immoral makes me laugh.
Morality (by the meanung of consented rules of what is good or bad) is needed when ethics (reflections on values) have already failed or got perverted.