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union

Uni·on/ˈjuː.njən/noun, verb, adjective

union is spelled U-N-I-O-N: 5 letters and 2 syllables (Uni·on). It appears 120 times per million words in written English, the 873rd most frequent word form (wordfreq, 2021 data). As a noun, union means “The act of uniting or joining two or more things into one” (English Wiktionary, September 2026). The plural of union is unions.

How many letters and syllables are in union?

Letters5: U-N-I-O-N
Syllables2: Uni·on
In writing120 times per million words; the 873rd most frequent word form
Wrong spellings searchednone measured in search
Same letters

Sources: letters and syllables from the English Wiktionary's hyphenation or pronunciation; written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media); rhymes and same-letter words are computed by PlainSpell from its own word list.

How common is union?

Union appears 120 times per million words in written English, the 873rd most frequent word form in the list.

Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).

How do you pronounce union?

  • /ˈjuː.njən/
  • /ˈjuː.ni.ən/

Union has 2 syllables, split Uni·on in writing.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Recordings: LL-Q1860_(eng)-Naomi_Persephone_Amethyst_(NaomiAmethyst)-union.wav, En-us-union.ogg, Wikimedia Commons (author and licence on each file's page).

What rhymes with union?

No other word on PlainSpell ends in the same sounds as union.

Spelled with the same letters in another order: iunno.

Computed by PlainSpell from the pronunciations in the English Wiktionary (dump of September 2, 2026): a rhyme shares every sound from the last stressed vowel to the end; ordered by written frequency (wordfreq 3.1).

Forms of union

  • unions plural, present, singular, he/she/it
  • unioning participle, present
  • unioned participle, past
  • more union comparative
  • most union superlative

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What does union mean?

The meanings the English Wiktionary records, quoted as written there (source below).

noun

  1. 1

    The act of uniting or joining two or more things into one.

  2. 2

    The state of being united or joined; a state of unity or harmony.

  3. 3

    Something united, or made one; something formed by a combination or coalition of parts or members; a confederation; a consolidated body; a league.

  4. 4

    A trade union; a workers' union.

  5. 5

    An association of students at a university for social and/or political purposes; also in some cases a debating body.

  6. 6

    A joint or other connection uniting parts of machinery, such as pipes.

  7. 7

    The set containing all of the elements of two or more sets.

  8. 8

    The act or state of marriage.

verb

  1. 1

    To combine sets using the union operation.

adjective

  1. 1

    Belonging to, represented by, or otherwise pertaining to a labour union.

    Actors have to be union to get work here.

  2. 2

    Indiafederal.

    The union government of India

noun

as Union
  1. 1

    The 0-10-2 locomotive wheel arrangement.

  2. 2

    The canton of the United States flag: the portion of the flag containing stars on a blue background.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

Union in Spanish, French, German and Portuguese

LanguageWords
Frenchunion (the act of uniting or the state of being united), groupement (that which is united; something formed by a…), connexion (joint), réunion (in set theory), mariage (marriage), accouplement (sexual intercourse)
GermanVereinigung, Union, Verein, Verband (the act of uniting or the state of being united)
Portugueseunião, junção (the act of uniting or the state of being united), matrimónio, matrimônio (marriage)
Spanishunión (the act of uniting or the state of being united)

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract). Translations are Wiktionary's, by sense; a linked word has its own PlainSpell page.

Where does union come from?

From Middle English unyoun, from Old French union, from Late Latin ūniō, ūniōnem (“oneness, unity”), from Latin ūnus (“one”). Doublet of unio.

Source: English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0), through kaikki.org (Wiktextract).

What to look up after union