adverse

C1 Topic:Describing Qualities

US /ˈæd.və(ɹ)s/ See IPA manual

Freq #22386

Meanings

1

adj
Bad or harmful; having a negative effect.

The drug can have adverse effects on some patients.
2

adj
Difficult or unfavourable; working against you.

The expedition continued despite the adverse weather conditions.

Thesaurus

Synonyms

1 adj · bad or harmful; having a... inauspicious unfavorable

2 adj · difficult or unfavourable;... contrary

Opposites

proverse

Word family

Derived forms adversely adversenessnonadverse

Related forms adversaryadversativeadversity averse versus

Common collocations

adverse selection Adjective + noun

Etymology

First attested around 1374, from Old French avers (French adverse), from Latin adversus (“turned against”), past participle of advertere, from ad- (“to”) + vertere (“to turn”). See also versus.

*wert- Proto-Indo-European avers Old French adversus Latin

View etymology graph ->

Topics

Describing Qualities

External links

# adverse

**Type:** Word
**Level:** C1
**Part of speech:** adj
**IPA (US):** /ˈæd.və(ɹ)s/
**Frequency rank:** 22386

## Meanings
1. Bad or harmful; having a negative effect.
2. Difficult or unfavourable; working against you.

## Examples
- The drug can have adverse effects on some patients.
- The expedition continued despite the adverse weather conditions.

## Antonyms
- proverse

## Derived Forms
- adversely
- adverseness
- nonadverse

## Related Forms
- adversary
- adversative
- adversity
- averse
- versus

## Roots and Affixes
- Root: *wert-
- Root: avers
- Root: adversus

## Etymology
First attested around 1374, from Old French avers (French adverse), from Latin adversus (“turned against”), past participle of advertere, from ad- (“to”) + vertere (“to turn”). See also versus.

## AI Etymology
Adverse is first attested around 1374, from Old French avers (French adverse), from Latin adversus (“turned against”), past participle of advertere, from ad- (“to”) plus vertere (“to turn”). Compare versus. The historical line also includes Proto-Indo-European *wert-. The analysis is mainly morphological: the modern adjectival form is built from the named base and affix.

## Topics
- Describing Qualities

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