superfluously
🇺🇸
/suːˈpɜːrfluəsli/
🇬🇧
/suːˈpɜːfluəsli/
in a way that is more than needed or wanted
He added his opinion superfluously, as everyone already agreed.
彼は皆がすでに同意しているのに、無駄に自分の意見を加えた。