136 Another Word for Adverse Reaction? – Adverse Reaction Synonyms & Antonyms

Want to say adverse reaction differently? Here are other words for adverse reaction and its similar synonyms and opposite words to say in unique way.


Meaning of adverse reaction

An adverse reaction refers to an undesirable or harmful response to a substance, treatment, or situation.

Etymology of adverse reaction

The term "adverse reaction" has its roots in the Latin words "adversus," meaning "opposite" or "against," and "reactio," meaning "action against" or "response."
The word "adverse" has been used in English since the 15th century to describe something that is unfavorable or hostile, while "reaction" has been used since the 17th century to describe a response to a stimulus or situation.
The phrase "adverse reaction" has been used in medical contexts since the mid-20th century to describe unwanted or harmful responses to treatments or substances.

Synonyms

allergic reaction side effect adverse effect adverse response negative reaction unfavorable reaction harmful reaction toxic reaction hypersensitivity reaction intolerance sensitivity opposition resistance aversion hostility antagonism antipathy ill effect undesirable effect unwanted effect deleterious effect damaging effect injurious effect noxious effect pernicious effect contradictory reaction paradoxical reaction abnormal reaction unusual reaction idiosyncratic reaction

Definitions

  • An adverse reaction is defined by Oxford Languages as an undesirable or harmful reaction to a substance, treatment, or situation, especially one that occurs as a result of medical treatment.
  • It can also refer to a negative or unfavorable response to a particular stimulus or situation.

Usage Examples

  • The patient experienced an adverse reaction to the new medication and had to be hospitalized.
  • The company recalled the product due to reports of adverse reactions in some consumers.
  • The doctor warned the patient about potential adverse reactions to the vaccine, such as fever and nausea.

Antonyms

beneficial reaction positive reaction favorable reaction desirable reaction harmless reaction benign reaction mild reaction moderate reaction neutral reaction expected reaction normal reaction typical reaction standard reaction safe reaction harmless effect beneficial effect positive effect desirable effect favorable effect

Related Adjectives

adverse harmful toxic noxious deleterious damaging injurious pernicious unfavorable negative undesirable unwanted unexpected unusual abnormal idiosyncratic allergic intolerant sensitive resistant hostile antagonistic beneficial positive favorable desirable harmless benign mild moderate neutral expected normal typical standard safe

Related Nouns

allergy intolerance sensitivity reaction response effect consequence result outcome symptom sign syndrome disease disorder condition illness infection poisoning toxicity pharmacology medicine treatment therapy drug medication vaccine serum antigen

Related Verbs

react respond affect influence interact provoke trigger stimulate induce cause produce elicit evoke exacerbate aggravate worsen intensify enhance improve alleviate mitigate prevent avoid
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