unreactive

[/ˌʌn.riˈæk.tɪv/]
adjective
inerte; não-reativo; inativo
1. Not showing a response to a stimulus; lacking reactivity or responsiveness
The patient's unreactive pupils indicated a serious neurological condition.
As pupilas não-reativas do paciente indicavam uma condição neurológica grave.
2. In chemistry, not readily undergoing chemical reactions; chemically stable
Noble gases are unreactive elements that rarely form compounds.
Os gases nobres são elementos inertes que raramente formam compostos.
3. Emotionally or psychologically unresponsive; apathetic
The audience seemed unreactive to the performer's attempts at humor.
A audiência pareceu indiferente aos esforços de humor do artista.
In Brazilian medical and scientific contexts, 'inerte' is the preferred technical term, particularly in neurology (unreactive pupils) and chemistry. In American English, the term is frequently used in medical documentation and chemistry education. The term reflects a clinical, objective assessment of lack of response rather than a judgmental description.
NYC Slang
dead inside; checked out; unresponsive
Synonyms / Sinônimos
inertunresponsiveapatheticpassiveinactiveimpassiveindifferentsluggish
Antonyms / Antônimos
reactiveresponsiveactiveengagedpassionatesensitive

Regional Variations

General Brazilian Portuguese
inerte; não-reativo
Most common usage in chemistry and medical contexts
Rio de Janeiro
inerte; desligado
In informal contexts, 'desligado' (disconnected) may be used for emotional unreactivity
São Paulo
inativo; sem reação
Technical and scientific contexts prefer 'inativo'
Portugal
inerte; não-reactivo
European Portuguese spelling uses 'c' in 'reactivo'; identical meaning

Related Words

reactionreactivityresponsivenessinertiapassivitystimulus

Related Idioms & Phrases

like a bump on a log
dead to the world
out to lunch
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