How to Say "adverse" in Spanish
The Spanish word for “adverse” is “adverso” — B2 level.

Examples
El partido se suspendió por el clima adverso.
The game was suspended due to the unfavorable weather.
Esta medicina no tiene efectos adversos.
This medicine has no adverse effects.
Tuvimos que trabajar en condiciones muy adversas.
We had to work in very hostile conditions.
Matching the word it describes
Just like most Spanish adjectives, this word must match the thing it describes. Use 'adverso' for masculine things (el clima) and 'adversa' for feminine things (la situación).
Position for Emphasis
While you usually put it after the noun (clima adverso), placing it before (adverso clima) makes it sound very poetic or dramatic, which is common in literature.
Adverso vs. Adversario
Mistake: “Using 'adverso' to mean an opponent.”
Correction: Use 'adversario' for a person you are competing against. Use 'adverso' to describe a situation that is working against you.
Related Translations
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