Definition & Meaning of "toxic"in English

toxic

ADJECTIVE

consisting of poisonous substances

Grammatical Information

Composition

Simple

qualitative

Superlative

most toxic

Comparative

more toxic

gradable

Examples

The toxic fumes emitted by the factory posed a serious threat to the health of nearby residents.

resulting from or related to poisonous substances

Examples

Consuming contaminated food can lead to toxic reactions in the body, causing illness or even death.

harmful, damaging, or unhealthy in behavior, attitude, or relationships

Slang

What does "toxic" mean in social behavior slang?

The term "toxic" describes behavior, attitudes, or relationships that are harmful, emotionally damaging, or unhealthy for others involved. The structure is a semantic extension of the literal meaning (poisonous), used metaphorically to describe negative interpersonal dynamics. It is informal slang widely used in social and relationship contexts to label patterns like manipulation, constant conflict, or emotional harm.

Examples

That friendship is toxic; you should leave it.

Lexical Tree