constancy
gb/kˈɑnstənsi/ us/kˈɑnstənsi/
B2
English
~ 8900
állandóság, következetesség, hűség, állhatatosság, konstancia, változatlanság
NOUN
B2
FORMAL
1
állandóság
B1
Usage pattern:
the constancy of [something]; constancy in [doing something]
The child’s need for routine and constancy made frequent moves very difficult for him.
A gyereknek szüksége volt a megszokott rendre és az állandóságra, ezért nagyon nehezen viselte a gyakori költözéseket.
She admired the constancy of his calm mood, even under pressure.
Csodálta, hogy a férfi nyugodt hangulata még nyomás alatt is ilyen állandó marad.
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.
Learner examples
Young children feel safe when there is constancy in their daily life.
A kisgyerekek biztonságban érzik magukat, ha állandóság van a mindennapi életükben.
I respect the constancy of her positive attitude.
Tisztelem a pozitív hozzáállásának következetességét.
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.
Common mistake:
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").
Meaning
steady, unchanging nature over time
Collocations
remarkable constancy
|emotional constancy
|the constancy of [something]
|constancy in [one's] efforts
|constancy and stability
|constancy of character
Synonyms
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.)
Antonyms
changeability (Highlights the tendency to change often, the opposite of remaining the same.)
|
instability (Focuses on being easily disturbed or not steady over time.)
Themes
emotions
|personality
|philosophy
|core_vocabulary
Definition
The quality of staying the same and not changing over time, especially in how something behaves or continues.
The quality of being firm, steady, and not changing over time, especially in attitudes, conditions, or behavior.
NOUN
C1
FORMAL
2
hűség
B1
Usage pattern:
constancy in [love/support]; constancy to [someone/something]
Despite years of separation, his constancy in love never seemed to weaken.
A többévnyi különélés ellenére szerelmi hűsége mintha soha nem gyengült volna.
She showed great constancy to her friends during the crisis.
A válság idején nagy hűséget tanúsított a barátai iránt.
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.
Learner examples
He thanked his parents for their constancy and love.
Megköszönte a szüleinek a kitartó hűségüket és a szeretetüket.
Her constancy in friendship makes people feel safe with her.
Baráti hűsége miatt az emberek biztonságban érzik magukat mellette.
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.
Common mistake:
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.
Meaning
faithful and loyal devotion
Collocations
constancy in love
|constancy in friendship
|constancy of his devotion
|her constancy to him
|constancy and loyalty
|constancy of support
Synonyms
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.)
Antonyms
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.)
Themes
relationships
|emotions
|values
Definition
Strong loyalty that does not change, especially in love, friendship, or belief, even when life is hard.
Faithful and unchanging loyalty to a person, belief, or cause, especially over a long period or through difficulties.
NOUN
C1
TECHNICAL
3
Usage pattern:
the constancy of [measurement/parameter]; assume the constancy of [something]
The experiment assumes the constancy of room temperature throughout the measurement period.
A kísérlet feltételezi a szobahőmérséklet állandóságát a mérési időszak teljes ideje alatt.
Astronomers once questioned the constancy of physical constants over cosmic time.
A csillagászok egykor megkérdőjelezték a fizikai állandók kozmikus időléptékű állandóságát.
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.
Learner examples
The scientist talks about the constancy of the speed of light.
A tudós a fénysebesség állandóságáról beszél.
In this exercise, you can assume the constancy of temperature.
Ebben a feladatban feltételezheted a hőmérséklet állandóságát.
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.
Common mistake:
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".
Meaning
unchanging value of a quantity
Collocations
constancy of temperature
|constancy of speed
|constancy of a variable
|assume the constancy of
|approximate constancy
|relative constancy
Synonyms
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.)
Antonyms
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.)
Themes
science
|mathematics
|technology
Definition
In science or technical writing, the fact that a number or condition stays the same and does not change.
In scientific or technical contexts, the state of a quantity, condition, or parameter remaining at the same value over time or under stated conditions.
Grammar
Dictionary form
constancy
IPA
GB/kˈɑnstənsi/
US/kˈɑnstənsi/
Syllables & stress
con - stancy (2 syllables)
Stress on 1st syllable (con)
Word forms
Noun
- Base: constancy
- Plural: constancies, constancy
Word family
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
Expressions
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.
Examples
- 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.