What are synonyms for "redundant"?

Synonyms for redundant: superfluous, unnecessary, excessive, surplus, repetitive, needless.

redundant

No longer needed or useful; superfluous.

Exceeding what is necessary or normal; repetitive.

Characterized by the inclusion of extra components that are not strictly necessary to functioning, in case of failure in other components.

The extra paragraph in the report was completely redundant and added no new information.

In modern programming, it is important to remove redundant code to improve system performance.

Using the phrase 'added bonus' is redundant because a bonus is inherently something added.