One meaning

wŭn
Frequency:
A single person or thing; a unit.

This is the one I like best. Of her many books, the best ones are the last two.

noun
7
1
Being a single member or element of a group, category, or kind.

I'm just one player on the team.

adjective
2
0
An indefinitely specified individual.

She visited one of her cousins.

pronoun
2
0
(indefinite personal pronoun) Any person (applying to people in general).

One shouldn't be too quick to judge. One's guilt may trouble one, but it is best not to let oneself be troubled by things which cannot be changed.

pronoun
2
0
(pronoun) Any person, entity or thing.

Driver, noun: one who drives.

pronoun
2
0
Advertisement
Of a period of time, being particular; as, one morning, one year.

One day the prince set forth to kill the dragon that had brought terror to his father's kingdom for centuries.

adjective
2
0
Designating a single, but not clearly specified, person or thing; a certain [one day last week]
adjective
1
0
Something numbered one or marked with one pip, as the face of a die or domino.
noun
1
0
Ketone.

Acetone.

affix
1
0
Any of certain related compounds containing oxygen.

Lactone.

affix
1
0
Advertisement
A suffix used to form the names of chemical compounds containing an oxygen atom attached to a carbon atom, such as acetone.
1
0
(impersonal pronoun) One thing (among a group of others); one member of a group.

The big one looks good. I want the green one. A good driver is one who drives carefully.

pronoun
1
0
(impersonal pronoun, sometimes with "the") The first mentioned of two things or people, as opposed to the other.

She offered him an apple and an orange; he took one and left the other.

pronoun
1
0
(mathematics) The neutral element with respect to multiplication in a ring.
noun
1
0
The digit or figure 1.
noun
1
0
Advertisement
(US) A one-dollar bill.
noun
1
0
(cricket) One run scored by hitting the ball and running between the wickets; a single.
noun
1
0
A joke or amusing anecdote.
noun
1
0
(Internet slang, leetspeak, sarcastic) Used instead of ! to amplify an exclamation, imitating unskilled users who forget to press the shift key while typing exclamation points.

A: SUM1 Hl3p ME im alwyz L0ziN!!?!

B: y d0nt u just g0 away l0zer!!1!!one!!one!!eleven!!1!

noun
1
0
(colloquial) A particularly special or compatible person or thing.
noun
1
0
Advertisement
Being a single, unspecified thing; a; any.

My aunt used to say, "One day is just like the other."

adjective
1
0

He is the one man who can help you.

adjective
1
0
Single in kind; the same.

All of one mind.

adjective
1
1
The number expressing unity or designating a single unit: the lowest cardinal number and the first used in counting a series; 1; I.
noun
1
1
A single person or thing.
noun
1
1
Advertisement
An unspecified individual; anyone.
pronoun
0
0
A ketone.

Acetone.

suffix
0
0
A chemical compound containing oxygen, especially in a carbonyl group.

Lactone.

suffix
0
0
Being a single thing or unit; not two or more.
adjective
0
0
Characterized by unity; forming a whole; united; undivided.

With one accord.

adjective
0
0
Advertisement
Designating a person or thing as contrasted with or opposed to another or others.

From one day to another.

adjective
0
0
Being uniquely or strikingly the person or thing specified.

The one solution to the problem.

adjective
0
0
(informal) A one-dollar bill.
noun
0
0
Some, or a certain, person or thing.

One of us must go.

pronoun
0
0
Any person or thing; anybody or anything [when one is exhausted, it is wise to rest]

What else could one do?

pronoun
0
0
Advertisement
The person or thing previously mentioned.

They rent a house, but I own one.

pronoun
0
0
Someone by the name of.
pronoun
0
0

Body and soul are not separate; they are one.

adjective
0
0
In agreement.

We are one on the importance of learning.

adjective
0
0
The same.

The two types look very different, but are one species.

adjective
0
0
Advertisement
Being a preeminent example.

He is one hell of a guy.

adjective
0
0
Being an unknown person with the specified name.

The town records from 1843 showed the overnight incarceration of one “A. Lincoln".

adjective
0
0
(obsolete) To cause to become one; to gather into a single whole; to unite.
verb
0
0
Eon, EON, E.ON; Neo, NEO.
anagrams
0
0
suffix
0
0
Advertisement
Any similar compound containing a carbonyl functional group.
suffix
0
0
One is a single person, unit or thing or the first number in a counting series.

An example of a one is a single man.

An example of a one is the number before two when counting.

noun
0
1
Being a single entity, unit, object, or living being.

I ate one peach.

adjective
0
1
Characterized by unity; undivided.

They spoke with one voice.

adjective
0
1
Being a single thing in contrast with or relation to another or others of its kind.

One day is just like the next.

adjective
0
1
Advertisement
Occurring or existing as something indefinite, as in time or position.

He will come one day.

adjective
0
1
Occurring or existing as something particular but unspecified, as in time past.

Late one evening.

adjective
0
1
(informal) Used as an intensive.

That is one fine dog.

adjective
0
1
The cardinal number, represented by the symbol 1, designating the first unit in a series.
noun
0
1
A one-dollar bill.
noun
0
1
Being the only individual of a specified or implied kind.

The one person I could marry; the one horse that can win this race.

adjective
0
2
at one
  • In accord or unity.
idiom
0
0
one and all
  • Everyone.
idiom
0
0
one by one
  • Individually in succession.
idiom
0
0
all one
  • making no difference; of no importance
idiom
0
0
at one
  • of the same opinion; in accord
idiom
0
0
one and all
  • everybody
idiom
0
0
one after another
  • each (of a group or series) in succession, esp. rapid succession
    To eat an entire bag of peanuts, one after another.
idiom
0
0
one another
  • each one the others
    Family members who look out for one another.
  • each one the other
    Twins who defend one another.
idiom
0
0
one by one
  • individually in succession
idiom
0
0
one of these days
  • at some unspecified time in the future
idiom
0
0
one of those days (or weeks, etc.)
  • a particularly trying or unfortunate day (or week, etc.)
idiom
0
0
one of those things
  • something that cannot be avoided, helped, changed, etc.
idiom
0
0
the one
  • a particular joke or anecdote
    Have you heard the one about the penguin who goes into a bar?.
idiom
0
0

Origin of one

  • arbitrary use of Gr -ōnē, used to signify a female descendant of

    From Webster's New World College Dictionary, 5th Edition

  • Middle English on from Old English ān oi-no- in Indo-European roots

    From American Heritage Dictionary of the English Language, 5th Edition

  • Probably from Greek -ōnē feminine patronymic suff

    From American Heritage Dictionary of the English Language, 5th Edition

  • From Middle English one, oon, on, oan, an, from Old English ān ("one"; same word as an), from Proto-Germanic *ainaz (“one"), from Proto-Indo-European *óynos (“single, one"). Cognate with Scots ae, ane, wan, yin (“one"); North Frisian Ã¥n (“one"); Saterland Frisian aan (“one"); West Frisian ien (“one"); Dutch een, één (“one"); German Low German een; German ein, eins (“one"); Swedish en (“one"); Icelandic einn (“one"); Latin unus (“one") (Old Latin oinos); Russian один (odin).

    From Wiktionary

  • Probably Ancient Greek -όνη (-onÄ“)

    From Wiktionary