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reaction

reaction

925 2.6
An immediate feeling after hearing or seeing something
  • noun
  • /riˈækʃən/
: reacción
  • Her immediate reaction to the surprise party was one of pure joy and excitement.
  • a negative reaction
  • recipient reaction
  • an emotional reaction

Now, there are different reactions to what is going on.

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Examples

  • When you revealed your intentions, sir, what was Mr Tindle's reaction?

  • Is it the event, or is it your reaction to that event?

  • And, you know, my initial reaction is, hell no.

  • Because his first reaction was to say it's OK.

  • And what would one's reaction be to that sort of thing?

  • I get that reaction a lot.

  • The first reaction is usually the correct one.

  • Again, this is a very typical reaction for UK tennis fans.

  • Okay, now that that is concluded, can we get some initial reactions?

  • Practitioners must carefully monitor clients' reactions to ensure they remain supportive of the process throughout the exploration.

    Academic text (2013)

Synonyms

feeling
vsreaction
∞ 1.0

An emotion or reaction you notice inside yourself

is broader and also covers thoughts or ideas after an event
emotion
vsreaction
∞ 1.6

A strong feeling such as love or anger

is broader and includes mild feelings and non emotional ideas
gut reaction
vsreaction
8 4.3

A strong first feeling you have without thinking

is less immediate and can be a considered thought or feeling

Antonyms

71 4.6

Lack of interest or concern about something

43 6.2

A lack of interest or care about things

Idioms

As a response to something that happens

Compounds

The body has a strong unwanted response to things like pollen or peanuts and causes swelling, sneezing and difficulty breathing

chemical reaction
  • Specialized
24 3.1

A change where substances turn into different substances

chain reaction
  • Specialized
16 4.5

A process in which one nuclear event makes more nuclear events happen, keeping the reaction going

11 3.7

The time between seeing or hearing something and acting on it

8 4.3

A strong first feeling you have without thinking

nuclear reaction
  • Specialized
4 4.4

A change inside an atom's core that makes or uses a large amount of energy

exothermic reaction
  • Specialized
1 4.2

A chemical change that gives off heat to the area around it

chain reaction
  • Specialized
1 4.1

A series of chemical or nuclear reactions in which one reaction makes the next start

endothermic reaction
  • Specialized
1 5.9

A chemical change that takes in heat from the area around it

immune reaction
  • Specialized
1 3.2

The body's defence that attacks foreign things like germs or transplanted organs

1 4.5

An automatic body response to something that affects it, like sweating or a faster heartbeat

1 7.7

A very hot reaction where parts of atoms join and make huge energy in stars or bombs

1 9.3

Bodily problems like paralysis or blindness that come from emotional stress and have no physical cause

displacement reaction
  • Specialized
1 6.0

A reaction where a more reactive element replaces a less reactive one in a compound

1 6.6

A strong feeling of worry that lasts a long time with physical signs like tension and shaking

1 4.1

Every push or pull makes an equal force in the opposite direction

reaction formation
  • Specialized
1 9.3

A way a person acts without knowing to hide feelings by doing the opposite

A harmful response of the body after receiving the wrong blood from another person

A chemical reaction where one compound breaks into two or more different substances

conditional reaction
  • Specialized
7.4

A learned response that happens when a certain sound or signal appears, for example a dog drooling at a bell

conditioned reaction
  • Specialized
5.0

A learned response that happens when a signal like a bell is paired with food many times

6.3

A reaction where one compound breaks into two or more simpler substances

defense reaction
  • Specialized
8.1

A mental process done without thinking that reduces worry about uncomfortable feelings

A chemical change where two compounds exchange parts to make two new compounds

4.4

Two compounds swap ions to make two new compounds

elimination reaction
  • Specialized
6.9

A chemical reaction in which one molecule breaks into two smaller molecules by losing atoms or small groups

endoergic reaction
  • Specialized
9.9

A reaction in the centre of an atom that takes in energy from around it

enzyme reaction
  • Specialized
3.8

A chemical change in a living thing that proteins make happen faster

addition reaction
  • Specialized
4.5

Two small molecules join to make a larger molecule

anamnestic reaction
  • Specialized
9.9

A quick increase in antibodies your body makes after it sees the same germ again

aldol reaction
  • Specialized
8.2

A chemical reaction where two small organic molecules join to make a larger molecule called an aldol

exoergic reaction
  • Specialized
8.8

A nuclear reaction that gives off energy as heat or light

learned reaction
  • Specialized
5.3

A way of acting you get from practice or experience

light reaction
  • Specialized
5.9

The first stage in plants' use of light to make energy molecules

Molisch reaction
  • Specialized
9.9

A chemical test that shows a violet ring when sugars are present

5.6

An extreme response by the immune system to something you are allergic to that can be life threatening

insulin reaction
  • Specialized
6.1

A sudden drop in blood sugar after taking too much insulin

4.2

A reaction where an acid and a base make salt and water

4.4

A process where two atoms combine to make a heavier atom and give off energy

An action that keeps someone safe from danger

quellung reaction
  • Specialized
9.9

A lab test that shows a germ's outer layer swelling when antibodies are added

reaction engine
  • Specialized
6.0

A machine like a jet or rocket that pushes a vehicle by throwing fast gas out the back

7.1

A machine that pushes a rocket or other spacecraft forward by shooting out fast gases

reaction propulsion
  • Specialized
7.5

A way to move that rockets use by pushing out fast gas so the vehicle moves the other way

reaction turbine
  • Specialized
7.9

A machine with blades that makes power by using a fall in pressure along the blades with water or steam

6.0

A chemical change caused by light such as sunlight

A sudden large wave of comments from many people that follows an event

startle reaction
  • Specialized
6.3

A quick change in your body and feelings when something suddenly surprises you, like a loud noise

7.9

A delayed reaction caused by the body's immune cells that appears hours after contact with something you are sensitive to

5.5

A very fast body reaction to something you are sensitive to, causing hives, itching, or very bad swelling

9.9

A blood test once used to check if someone had syphilis

How Intense

outburst
83 3.9
reaction
925 2.6
indifference
71 4.6

Surface Forms

reaction singular
reactions plural

Morphology

reaction = react (transparent) = re + act + ion

This sense is a straightforward noun derived from 'react' meaning the act or result of responding.

Etymology

Reaction comes from the parts re- ('back' or 'again') and act ('to do'). So an emotional reaction is how you 'do' or reply in return when something happens, which is why it names your immediate feeling or response.