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- pronunciation:
- ri
aek
sh
 n
- features:
- Word Combinations (noun), Word Explorer, Word Parts
| part of speech: |
noun |
| definition 1: |
a movement, action, or response in reverse direction or manner.
- synonyms:
- counteraction, reversal, withdrawal
- similar words:
- reverse, rise
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| definition 2: |
movement toward extreme political conservatism.
The 1980s was a decade of reaction.- synonyms:
- ultraconservatism
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| definition 3: |
a response to an influence or stimulus.
I was surprised by his calm reaction to the news of her suicide.We all want to see her reaction when they announce the winner.- synonyms:
- response
- similar words:
- reply, rise
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| definition 4: |
in chemistry, change that occurs as substances are combined.
The substance turns blue because of a chemical reaction. |
| definition 5: |
in physics, the atomic change that occurs when a nucleus is bombarded with a particle, photon, or other nucleus.
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| definition 6: |
in mechanics, the immediate response to the application of a force, resulting in an equal and opposite force.
- synonyms:
- counteraction
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| related words: |
answer, attitude, behavior, effect, emotion, expression, idea, kick, kickback, mechanism |
adjective + (n.)reaction
acute,
adverse,
affective,
allergic,
anaphylactic,
angry,
asthmatic,
biochemical,
catalytic,
chemical,
cognitive,
defensive,
delayed,
emotional,
explosive,
extreme,
facial,
fatal,
favorable,
fearful,
hostile,
hysterical,
immediate,
immune,
inflammatory,
initial,
instant,
instinctive,
intense,
knee-jerk,
life-threatening,
mild,
mixed,
negative,
nuclear,
opposite,
parental,
photochemical,
physiological,
positive,
predictable,
psychological,
quick,
rapid,
severe,
shocked,
spontaneous,
subjective,
surprised,
systemic,
thermonuclear,
toxic,
traumatic,
typical,
understandable,
unexpected,
violent,
visceral
[See all][See only the most frequent]
verb + (n.)reaction
anticipate, catalyze, cause, elicit, evoke, gauge, induce, prompt, provoke, spark, suppress, surprise, trigger
noun + (n.)reaction
allergy, audience, avoidance, chain, coping, enzyme, fission, fusion, gauge, grief, gut, helper, oxidation, recipient, stress
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| derivations: |
reactional (adj.), reactionally (adv.) |
The word reaction
contains the following parts:
act, ag
Latin
root
that means do, drive
  Example words:
action, activate, active, actively, activist, activity, actor, actress, actual, agency, agenda, agent, agile, agitate, enact, hyperactive, interact, interaction, interactive, radioactive, react, reaction, reactor, reagent, retroactive, transact, transaction
-ion
Latin
noun-forming suffix
that means the act, process, or result of
More about this word part:
The suffix -ion
attaches to bases that are Latin verb stems ending in s or t.
Example words:
ablation, abrasion, accession, action, addiction, addition, admission, adoption, affection, affliction, aggression, ambition, attention, audition, commission, commissioner, compassion, compassionate, conclusion, condition, confusion, congestion, construction, direction, diction, dictionary, exclusion, expedition, fusion, illusion, immersion, incision, interaction, inquisition, mission, nation, omission, passion, passionate, permission, prediction, prescription, question, reaction, reflection, rendition, revolution, satisfaction, section, session, solution, television, transaction
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