# adverse

Pronunciation: say "AD-vurs" /ˈæd.və(ɹ)s/

## Adjective

1. Unfavorable or harmful; actively opposing someone's interests or working against their welfare.
   - Simple: Bad or harmful, and working against what someone wants or needs.
   - _The medication carries a risk of adverse reactions in older patients._
   - _Investors grew cautious amid increasingly adverse economic conditions._
2. Opposed or contrary, standing against a person's interests or desires.
   - Simple: Opposed to something, or set against what someone wants.
   - _The witness gave testimony adverse to her own brother's interests._
   - _The two companies hold adverse claims to the same patent, and neither will back down._
3. Placed directly opposite something and facing toward it.
   - Simple: Directly across from something and facing it.

## Origin

First attested around 1374, from Old French avers, from Latin adversus ("turned against"), the past participle of advertere, from ad- ("to") plus vertere ("to turn").

Source: DictionaryAI, https://dictionaryai.com/define/adverse (written from Wiktionary data, CC BY-SA 4.0: https://creativecommons.org/licenses/by-sa/4.0/).