There is only one apple left on the table.
Csak egy alma maradt az asztalon.
She has one brother and two sisters.
Egy fiútestvére és két lánytestvére van.
One of my friends is from Spain.
Learner examples
I have one pen.
Van egy tollam.
There is one cat in the garden.
Egy macska van a kertben.
One boy is playing in the park.
Common mistake:
Learners sometimes confuse 'one' with 'a' or 'an'. 'One' emphasizes the exact number, while 'a/an' may not.
Collocations
one day
|one person
|one thing
|one time
Synonyms
single (Often used to emphasize being alone or only one, sometimes with stylistic differences.)
Antonyms
zero (Represents the absence of any quantity, opposite of having one.)
Themes
math
|daily life
|core_vocabulary
|education
Definition
The number that comes before two and after zero.
The number represented by the numeral 1; the first positive integer.
Usage pattern:
[something] is the one that [verb]
This is the one I told you about.
Ez az, amiről beszéltem.
Which one do you prefer?
Melyiket részesíted előnyben?
He is the one who helped me.
Learner examples
This is the one I like.
Ez az, ami tetszik.
Which one is your bag?
Melyik a te táskád?
He is the one with a red hat.
Common mistake:
Learners sometimes forget to match 'one' with singular verbs and pronouns.
Meaning
A single person or thing
Collocations
the one who
|the one that
|this one
|that one
Synonyms
individual (More formal and often refers to a person specifically.)
Antonyms
many (Refers to more than one person or thing.)
Themes
daily life
|core_vocabulary
|communication
Definition
Used instead of repeating a noun to mean a single person or thing.
Used to refer to a single person or thing already mentioned or easily identified.
One of the chairs is broken.
Az egyik szék eltört.
She is one of my best friends.
Ő az egyik legjobb barátom.
Learner examples
One of my shoes is lost.
Az egyik cipőm elveszett.
He is one of my teachers.
Ő az egyik tanárom.
Meaning
A single unit or item
Collocations
one of them
|one of us
|one of the best
Synonyms
single unit (More technical or literal in some contexts.)
Antonyms
multiple (Refers to more than one unit or item.)
Themes
daily life
|core_vocabulary
Definition
A single person or thing.
A single person or thing, considered as a unit.
Usage pattern:
[group] is one in [purpose/goal]
We must act as one to succeed.
Egy emberként kell cselekednünk, hogy sikerrel járjunk.
They spoke with one voice on the matter.
Az ügyben egy hangon szóltak.
The two companies became one after the merger.
Learner examples
We work as one team.
Egy csapatként dolgozunk.
They speak as one group.
Egy csoportként szólnak.
Meaning
United or whole as a single entity
Collocations
one nation
|act as one
|speak with one voice
Synonyms
united (Emphasizes being joined together for a purpose.)
Antonyms
divided (Separated into parts, lacking unity.)
Themes
relationships
|core_vocabulary
Definition
Together as a single group or thing.
Forming a single unit; united or whole.
Usage pattern:
One [verb] when [condition]
One should always tell the truth.
Az embernek mindig igazat kell mondania.
If one is careful, mistakes can be avoided.
Ha az ember óvatos, elkerülhetők a hibák.
One must be prepared for change.
Learner examples
One should eat healthy food.
Az embernek egészségesen kell étkeznie.
One must be polite to others.
Az embernek udvariasnak kell lennie másokkal.
One can learn from mistakes.
Common mistake:
Learners often use 'one' in informal contexts where 'you' would sound more natural to native speakers.
Meaning
An unspecified person (formal)
Collocations
one should know
|if one wishes
Synonyms
you (impersonal) ('You' is less formal and more common in everyday English for general statements.)
Themes
formal language
|core_vocabulary
|communication
Definition
'One' means 'any person' in general statements, used in formal English.
Used to refer to an unspecified person in general statements, especially in formal speech or writing.