constancy
gb/kˈɑnstənsi/ us/kˈɑnstənsi/
B2
英語
~ 8900
語義
0件の語義
名詞
formal
B2
property
1
steady, unchanging nature over time
The quality of staying the same and not changing over time, especially in how something behaves or continues.
用法パターン：
the constancy of [something]; constancy in [doing something]
よくある間違い：
Learners often confuse "constancy" with "consistency". "Constancy" is about something staying the same over time in a broad, usually emotional or moral sense. "Consistency" is more about regular, repeated behavior, or about things logically fitting together (e.g., "consistency in quality", "logical consistency"). Learners also sometimes use "a constancy" for a specific event; usually it is used without an article or with "the" plus a following phrase (e.g., "the constancy of her support").
類義語
stability (More common and general; often used for systems, situations, and mental health, not just personal character.)
|
steadfastness (Emphasizes firm, unshaken firmness in attitude or commitment, often with a moral tone.)
対義語
changeability (Highlights the tendency to change often, the opposite of remaining the same.)
|
instability (Focuses on being easily disturbed or not steady over time.)
コロケーション
remarkable constancy
|emotional constancy
|the constancy of [something]
|constancy in [one's] efforts
|constancy and stability
|constancy of character
テーマ
emotions
|personality
|philosophy
|core_vocabulary
例文
- The child’s need for routine and constancy made frequent moves very difficult for him.
- She admired the constancy of his calm mood, even under pressure.
- Economic growth depends in part on the constancy of government policy.
- Meditation helped him find a sense of inner constancy amid all the external changes.
- Over the years, the constancy of the company’s values has earned it deep public trust.
学習者向け例文
- Young children feel safe when there is constancy in their daily life.
- I respect the constancy of her positive attitude.
- The team’s success comes from the constancy of their hard work.
- He tries to give his students constancy and support.
- The constancy of the rules makes the game easy to understand.
名詞
formal
C1
property
2
faithful and loyal devotion
Strong loyalty that does not change, especially in love, friendship, or belief, even when life is hard.
用法パターン：
constancy in [love/support]; constancy to [someone/something]
よくある間違い：
Learners may try to use "constancy" where "loyal" or "faithful" is more natural in everyday speech (e.g., saying "He is very constancy" instead of "He is very loyal" or "He shows great constancy"). Remember that "constancy" is a noun, not an adjective, and it sounds formal or literary, especially in romantic contexts. In casual English, "loyalty" or "faithfulness" are usually better choices.
類義語
loyalty (More common and neutral; focuses on support for people or groups rather than on the unchanging, long-term nature.)
|
faithfulness (Often used in romantic or religious contexts; similar meaning but slightly less formal and more emotional.)
対義語
infidelity (Typically used in romantic or marital contexts for being unfaithful, directly opposing romantic constancy.)
|
fickleness (Emphasizes changing feelings or loyalties quickly, the opposite of steady devotion.)
コロケーション
constancy in love
|constancy in friendship
|constancy of his devotion
|her constancy to him
|constancy and loyalty
|constancy of support
テーマ
relationships
|emotions
|values
例文
- Despite years of separation, his constancy in love never seemed to weaken.
- She showed great constancy to her friends during the crisis.
- The leader’s constancy to his principles earned him both respect and criticism.
- Their marriage survived because of a shared constancy of affection and respect.
- In her letters, she promised him eternal constancy and trust.
学習者向け例文
- He thanked his parents for their constancy and love.
- Her constancy in friendship makes people feel safe with her.
- Many people admire his constancy to his beliefs.
- Constancy in love is not always easy.
- They stayed together because of their constancy to each other.
名詞
technical
C1
property
3
unchanging value of a quantity
In science or technical writing, the fact that a number or condition stays the same and does not change.
用法パターン：
the constancy of [measurement/parameter]; assume the constancy of [something]
よくある間違い：
Learners may confuse "constancy" with "constant". "Constant" is usually an adjective ("a constant speed") or a noun in math and science ("a physical constant"), while "constancy" is a more abstract noun for the general quality or state of not changing. In technical writing, "constant" is far more common than "constancy".
類義語
invariance (More technical; stresses that a quantity does not change under certain operations or conditions.)
|
uniformity (Emphasizes sameness across space or time, not always tied to a precise numeric value.)
対義語
variability (Highlights the degree to which a quantity changes instead of staying constant.)
|
fluctuation (Focuses on up-and-down changes over time, the opposite of a fixed value.)
コロケーション
constancy of temperature
|constancy of speed
|constancy of a variable
|assume the constancy of
|approximate constancy
|relative constancy
テーマ
science
|mathematics
|technology
例文
- The experiment assumes the constancy of room temperature throughout the measurement period.
- Astronomers once questioned the constancy of physical constants over cosmic time.
- For the model to work, we rely on the constancy of the flow rate.
- The near constancy of the signal suggests that the system is stable.
- Any deviation from the constancy of pressure will affect the outcome of the reaction.
学習者向け例文
- The scientist talks about the constancy of the speed of light.
- In this exercise, you can assume the constancy of temperature.
- The graph shows the constancy of the machine’s speed.
- We test the constancy of this number over time.
- The constancy of the data means the system is not changing.
文法
辞書形
constancy
IPA
GB/kˈɑnstənsi/
US/kˈɑnstənsi/
音節・強勢
con - stancy （2音節）
Stress on 1st syllable (con)
活用形
Noun
- Base: constancy
- Plural: constancies, constancy
関連語
Forms
constancies
noun
Core family
constant
adjective B1
constantly
adverb B1
Related words
consistent
adjective B1
consistency
noun B2
Negative and opposite forms
inconstant
adjective
Advanced or less common
inconstancy
noun
表現
constancy of purpose
1/kˈɑnstənsi əv pˈɚpəs/
fixed phrase
formal
steady commitment to a goal
A strong and steady focus on a goal that does not change, even when there are problems or delays.
例文
- Her success came from hard work and a remarkable constancy of purpose.
- The company’s constancy of purpose has helped it survive many market changes.