unnecessarily
Definitions
In a way that is not needed or required.
To an extent that is excessive or beyond what is appropriate.
Examples
He apologized unnecessarily for a mistake that was not his fault.
The project was delayed because the team spent hours debating unnecessarily complex details.
Synonyms
needlessly gratuitously superfluously excessively pointlessly wantonly unduly
Antonyms
necessarily usefully appropriately fittingly suitably properly requisitely