I put in too much sugar.
Don't buy unnecessary things.
unnecessary; uncalled-for; unwanted
Used for actions, remarks, or interference that are not needed and often annoying; implies something is better left unsaid or undone.
Please don't say unnecessary things.
He always makes uncalled-for remarks.
Adverbial use meaning 'on top of that' or 'to make matters worse'; often used when an additional factor intensifies a situation, frequently in negative contexts.
It's raining, which makes it feel even colder.
After hearing the explanation, I became even more confused.
I did something unnecessary and it just caused more trouble.
My mother is always worrying unnecessarily.
I have extra ingredients, so I'll give you some.
The medicine didn't help, and it just made me even more worried.