英語

reduce

gb/ɹɪdˈus/ us/ɹɪdˈus/
A2 英語
~ 600
語義
0件の語義
動詞 A2 action
1

Make something smaller or less

To make something less in size, number, or amount.

用法パターン: to reduce [something]
よくある間違い:
Learners sometimes confuse 'reduce' with 'remove'. 'Reduce' means to make smaller, not to eliminate completely.
類義語
decrease (Very close in meaning; often interchangeable in neutral contexts.)
対義語
increase (Opposite in meaning; to make something greater in amount or size.)
コロケーション
reduce costs |reduce waste |reduce risk |reduce speed |reduce emissions
テーマ
daily life |business |science |core_vocabulary
例文
  • The company plans to reduce its workforce by 10%.
  • We need to reduce the amount of sugar in our diet.
  • The government is working to reduce air pollution.
  • She reduced her spending after losing her job.
学習者向け例文
  • I want to reduce my weight.
  • They will reduce the price.
  • We must reduce waste at home.
  • He reduced the speed of the car.
動詞 B1 action
2

Lower level or intensity

To make something less strong or less loud.

用法パターン: to reduce [level/intensity]
類義語
diminish (Slightly more formal; can imply gradual decrease.)
対義語
increase (To raise the level or intensity of something.)
コロケーション
reduce heat |reduce stress |reduce noise
テーマ
daily life |health |core_vocabulary
例文
  • Reduce the heat and let the soup simmer for 10 minutes.
  • Meditation can help reduce stress.
  • They installed panels to reduce noise from the street.
学習者向け例文
  • Please reduce the heat on the stove.
  • Exercise can reduce stress.
  • We need to reduce noise in the library.
動詞 B2 action
3

Bring to weaker state

To make someone or something weaker or less able than before.

用法パターン: to reduce [someone/something] to [state]
類義語
degrade (Often implies moral or social lowering as well.)
対義語
elevate (To raise someone or something to a better state.)
コロケーション
reduce someone to tears |reduce a city to ruins
テーマ
emotions |conflict |core_vocabulary
例文
  • The bombing reduced the city to rubble.
  • His rude comments reduced her to tears.
  • The illness reduced him to a shadow of his former self.
学習者向け例文
  • The fire reduced the house to ashes.
  • Her words reduced him to tears.
  • The war reduced the town to ruins.
動詞 technical B1 action
4

Cook liquid until thicker

In cooking, to heat a liquid until some water goes away and it becomes thicker.

用法パターン: to reduce [liquid/sauce]
類義語
concentrate (General term for making a liquid stronger; not specific to cooking.)
対義語
dilute (To make a liquid weaker by adding water or another liquid.)
コロケーション
reduce a sauce |reduce stock
テーマ
food |cooking |food_drink
例文
  • Reduce the sauce over low heat until it thickens.
  • The chef reduced the stock for an hour before serving.
  • You can reduce the wine to intensify its flavor.
学習者向け例文
  • Reduce the soup until it is thick.
  • The chef will reduce the sauce.
  • Boil the juice to reduce it.
文法
辞書形
reduce
IPA
GB/ɹɪdˈus/
US/ɹɪdˈus/
音節・強勢
re - duce (2音節)
Stress on 2nd syllable (duce)
活用形
Verb
  • Base: reduce
  • 3rd Person Singular: reduces
  • Present Participle: reducing
  • Past: reduced
関連語
Forms
reduces verb reducing verb reduced verb
Core family
reduction noun B1
Related words
reducer noun reducible adjective
Negative and opposite forms
increase verb A2 irreducible adjective
Advanced or less common
reductive adjective
表現

reduce by half

1
/ɹɪdˈus bˈaɪ hˈæf/
fixed phrase

Make something half as much

To make something 50% smaller in amount or size.

例文
  • Reduce the recipe by half if you are cooking for two.
  • They managed to reduce their energy use by half.

reduce speed

1
/ɹɪdˈus spˈid/
fixed phrase

Slow down a vehicle's speed

To make a car, bike, or other vehicle go slower.

例文
  • Drivers should reduce speed in school zones.
  • Reduce speed when approaching sharp curves.

reduce to rubble

1
/ɹɪdˈus tə ɹˈʌbəl/
idiom

Destroy leaving only rubble

To destroy a building so that only broken pieces remain.

例文
  • The earthquake reduced the entire neighborhood to rubble.
  • Bombing raids reduced the factory to rubble.

reduce to tears

1
/ɹɪdˈus tə tˈɪɹz/
idiom

Make someone start crying

To make someone cry because of your words or actions.

例文
  • The teacher's harsh criticism reduced the student to tears.
  • His cruel joke reduced her to tears.

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