pure

/pjʊə(r)/ (bre, ipa) · /pjʊr/ (ame, ipa) · /ˈpyu̇r/ (ame, mw)

pure — adjective

  • purepositive
  • purercomparative
  • purestsuperlative

1. A pure substance contains only one material and has nothing else added — for ins

1.形容詞A2
釋義

A pure substance contains only one material and has nothing else added — for instance, pure gold is made of the element gold and no other metal.

例句

This necklace is made of pure gold, so it is worth a lot of money.

collocation: pure gold / pure silver / pure cotton

Madison only buys shirts that are labelled 100 percent pure cotton.

同義詞
  • unadulterated

    more formal; used for food or substances that have not been weakened by added ingredients

  • 100%

    informal substitute; '100% cotton' means the same as 'pure cotton'

反義詞
  • impure

    contains other materials mixed in

  • alloyed

    technically describes metals combined with other metals

文法句型

pure + noun (pure gold, pure silk)

be + pure

用法筆記

Most common with materials that are sold at different quality levels (gold, silver, cotton, silk, wool). Distinguished from sense 4 (CLEAN) — this sense is about composition, not cleanliness.

常見錯誤

This ring is pure' (without context).
This ring is made of pure gold.
💡'pure' alone can sound unclear; specify what the material is.

2. A colour described as pure exists as a single, unmixed shade — no other colour h

2.形容詞B1
釋義

A colour described as pure exists as a single, unmixed shade — no other colour has been added to lighten or dull it.

例句

The artist mixed the paints until she achieved a pure shade of blue.

collocation: pure shade / pure colour

Yara chose pure white for the walls because it makes the room look bigger.

同義詞
  • unmixed

    less common but more literal; 'an unmixed blue'

  • vivid

    focuses on brightness rather than lack of mixing

反義詞
  • muted

    describes a colour that has been softened by adding other colours

  • pale

    describes a colour diluted with white

文法句型

pure + colour noun (pure red, pure blue)

pure + colour adjective (pure white)

3. When a sound is pure, it comes through as clear and steady, without any scratchi

3.形容詞B1
釋義

When a sound is pure, it comes through as clear and steady, without any scratchiness, humming, or roughness.

例句

The singer's voice was so pure that the audience held their breath.

collocation: pure voice / pure tone / pure sound

Andrés tuned the guitar until each note rang out pure and clear.

同義詞
  • clear

    more general; 'a clear voice' is easy to hear but may not be perfectly steady

  • crystal-clear

    emphatic; 'a crystal-clear note' is extremely pure

反義詞
  • harsh

    rough and unpleasant to hear

  • muffled

    not clear, difficult to hear distinctly

文法句型

pure + sound noun (pure tone, pure voice)

be + pure

用法筆記

Commonly describes voices, musical notes, and natural sounds. Opposite sense: a sound that is 'rough,' 'harsh,' or 'distorted'.

常見錯誤

The sound was pure and clean.' (redundant).
The sound was pure.
💡'pure' already implies clean/clear.

4. Not containing any dirt, pollution, or harmful substances; clean enough to be sa

4.形容詞B1
釋義

Not containing any dirt, pollution, or harmful substances; clean enough to be safe.

例句

Faisal fills his bottle with pure water from the mountain spring.

collocation: pure water / pure air

The hotel installed filters so guests could breathe pure air in their rooms.

同義詞
  • clean

    more general and common; 'clean water' may be filtered but not necessarily naturally pure

  • pristine

    formal; suggests the substance has never been touched by pollution

反義詞
  • polluted

    containing harmful substances

  • contaminated

    made impure by contact with something dirty or poisonous

文法句型

pure + noun (pure water, pure air)

be + pure

用法筆記

Distinguish from sense 1 (NOT MIXED) — this sense focuses on cleanliness and safety rather than composition. 'Pure water' in sense 4 means it is safe to drink; in sense 1 it would mean it is H₂O with nothing added.

常見錯誤

The air is pure and clean.' (redundant).
The air is pure.
💡'pure' already covers 'clean' here.

5. Used before an abstract noun to emphasise that something is exactly that quality

5.形容詞B1
釋義

Used before an abstract noun to emphasise that something is exactly that quality and nothing else — for example, 'pure luck' means it was only luck that made something happen, not skill or planning.

例句

It was pure luck that Hugo found his lost wallet on the street.

collocation: pure luck / pure chance / pure coincidence

Their meeting at the airport was pure coincidence, not something they planned.

同義詞
  • complete

    less dramatic; 'complete luck' is factual, 'pure luck' carries emotional emphasis

  • sheer

    very similar but slightly stronger; 'sheer luck' emphasises that luck was the sole factor

文法句型

pure + abstract noun (pure luck, pure coincidence)

用法筆記

Only used before abstract nouns (luck, coincidence, joy, nonsense, bliss). Never used before concrete nouns in this sense. Compare with sense 7 — sense 7 is predicative ('it was pure bliss') while this sense is attributive ('pure bliss' used directly before the noun).

常見錯誤

It was pure book.
It was pure nonsense.
💡This sense only works with abstract nouns.

6. Refers to an academic field where the aim is to build knowledge and theoretical

6.形容詞B2
釋義

Refers to an academic field where the aim is to build knowledge and theoretical understanding, not to create practical or commercial applications.

例句

Olivia studied pure mathematics at university, focusing on number theory.

collocation: pure mathematics / pure science / pure physics

Professor Okafor's research is in pure physics, with no engineering application yet.

同義詞
  • theoretical

    broader; 'theoretical physics' can mean purely abstract or not yet tested

  • abstract

    focuses on ideas rather than physical objects; 'abstract mathematics'

反義詞
  • applied

    used in practical contexts; 'applied mathematics' uses maths to solve real problems

  • practical

    concerned with actual use rather than theory

文法句型

pure + academic field (pure mathematics, pure science)

用法筆記

Opposite of 'applied.' The term is most common in 'pure mathematics,' 'pure science,' and 'pure research.' Often used by universities to distinguish academic departments.

7. Positioned after a noun or the linking verb 'to be' to stress that a particular

7.形容詞B2
釋義

Positioned after a noun or the linking verb 'to be' to stress that a particular feeling or experience is wholly that thing, with no other element mixed in.

例句

Lying in the hammock with a book and fresh mangoes was pure bliss.

predicative use: 'be + pure + abstract noun'

The whole weekend at the beach was pure magic for the children.

同義詞
  • absolute

    similar intensifying meaning; 'absolute bliss' is more common in British English

  • total

    less emotional; 'total bliss' sounds more factual

文法句型

be + pure + abstract noun (it was pure bliss)

用法筆記

Distinguish from sense 5 (COMPLETE) — sense 5 goes before the noun ('pure luck'), while this sense follows the verb 'to be' and the noun that is being described ('it was pure bliss'). The two senses overlap in some uses ('pure joy' can be attributive or predicative), but this sense adds a stronger 'nothing else' flavour.

8. Living or behaving according to high moral standards, especially by avoiding sex

8.形容詞B2
釋義

Living or behaving according to high moral standards, especially by avoiding sexual thoughts or acts that are considered wrong.

例句

The monk spoke about the importance of keeping one's thoughts pure.

collocation: pure thoughts / pure heart / pure mind

Adina was raised to believe that a person should lead a pure life.

同義詞
  • chaste

    specifically about sexual purity; formal and somewhat old-fashioned

  • virtuous

    broader moral goodness; 'a virtuous person' is good in many ways, not just sexually

反義詞
  • impure

    the direct opposite; 'impure thoughts' in a religious context

  • sinful

    strongly religious; committed wrongdoing according to moral law

文法句型

pure + noun (pure thoughts, pure heart)

pure in + noun (pure in heart)

用法筆記

Often carries religious or traditional overtones. 'Pure in heart' is a set phrase from religious texts. In modern everyday conversation, this sense can sound old-fashioned; 'innocent' or 'decent' are more neutral alternatives.

常見錯誤

She is pure' (ambiguous).
She leads a pure life.
💡Adding context makes the meaning clear and avoids confusion with other senses of 'pure.'