IPA: /ˌdɛtrɪˈmɛntəli/
KK: /dɛtrɪˈmɛntəli/
In a way that causes harm or damage.
The changes to the policy could affect the environment detrimentally.
Detrimentally → It is formed from "detriment" (from Latin "detrimentum", meaning loss or damage) and the suffix "-ally" (meaning in a manner relating to). The word "detrimentally" means in a manner that causes loss or damage.
Think of 'detriment' as something that causes 'loss' or 'damage' — and '-ally' indicates how it happens. So, when something happens detrimentally, it means it causes harm.