Redundantly
/rɪˈdʌndəntli/
Definition 1 of 2
Pro Tip 1/3Avoid Tautology
Using 'redundantly' to describe repetition can itself be redundant—avoid saying the same thing twice. 
The phrase 'redundantly repeat' is often tautological; simply 'repeat' suffices.
Pro Tip 2/3Emphasize Excess
'Redundantly' is useful when emphasizing unnecessary excess, such as over-preparing. 
He explained the instructions redundantly, as if we'd never heard them before.
Pro Tip 3/3Spot Overuse
Be aware of 'redundantly' overuse which can irritate readers or listeners by stating the obvious. 
She redundantly pointed out the rules, even though we all had the handbook.