classify
gb/klˈæsɪfˌaɪ/ us/klˈæsɪfˌaɪ/
B1
英語
~ 3900
語義
0件の語義
動詞
B1
action
1
Arrange into groups or categories
To put people or things into groups because they are similar in some way.
用法パターン：
to classify [something] as [category]
よくある間違い：
Learners sometimes confuse 'classify' with 'identify'. 'Classify' means to put into a category, while 'identify' means to recognize what something is.
類義語
categorize (More common in everyday speech; interchangeable in many contexts.)
|
sort (Often used for simpler or more physical arrangements.)
対義語
mix (Opposite in the sense of not separating into categories.)
|
confuse (Opposite in the sense of making categories unclear.)
コロケーション
classify information
|classify data
|classify documents
|classify animals
|classify as
テーマ
organization
|science
|education
|work
|core_vocabulary
例文
- Scientists classify animals into groups such as mammals, birds, and reptiles.
- The library system classifies books by subject.
- The teacher asked the students to classify the shapes by the number of sides.
- The company classifies its products based on price range.
- Historians classify ancient artifacts according to their origin.
学習者向け例文
- We classify the clothes by color.
- The teacher will classify the papers.
- They classify cars by size.
- Classify these fruits into two groups.
- We can classify animals by where they live.
動詞
technical
B2
action
2
Mark information as secret or restricted
To say officially that some information must be kept secret for security reasons.
用法パターン：
to classify [information/document] as [security level]
よくある間違い：
Learners may confuse this meaning with 'classify' for categorizing. In this sense, it is about secrecy, not grouping.
類義語
restrict (General term for limiting access; not specific to security classification.)
|
confidentialize (Rare and formal; means to make confidential.)
対義語
declassify (Officially remove the secret status from something.)
コロケーション
classify a document
|classify information
|classify data as confidential
|classified material
テーマ
government
|security
|law
|business
|communication
例文
- The government decided to classify the report for national security reasons.
- Military officials classified the mission details as top secret.
- The agency classified the files to protect sensitive information.
- They classified the data to prevent leaks.
- All communications from that period were classified immediately.
学習者向け例文
- The army classified the plan.
- They classified the letter as secret.
- The police classified the photo.
- We must classify these files before sending them.
- The report is classified by the government.
文法
辞書形
classify
IPA
GB/klˈæsɪfˌaɪ/
US/klˈæsɪfˌaɪ/
音節・強勢
clas - si - fy （3音節）
Stress on 1st syllable (clas)
活用形
Verb
- Base: classify
- 3rd Person Singular: classifies
- Present Participle: classifying
- Past: classified
関連語
Forms
Core family
class
noun A1
classification
noun B1
Related words
Negative and opposite forms
unclassified
adjective
misclassify
verb
Advanced or less common
unclassifiable
adjective
declassify
verb C1
表現
classify as
1/klˈæsɪfˌaɪ ˈæz/
fixed phrase
Put something in a category
To say that something belongs to a certain group or type.
例文
- Many experts classify this bird as endangered.
- I would classify his style as modern.
- The law classifies this act as a crime.
highly classified
1/hˈaɪli klˈæsɪfˌaɪd/
fixed phrase
technical
Very secret in official terms
Having a very high level of official secrecy.
例文
- The details of the operation are highly classified.
- She works with highly classified documents.