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Synonyms

diary

American  
[dahy-uh-ree] / ˈdaɪ ə ri /

noun

  • diaries
    plural
  1. a daily record, usually private, especially of the writer's own experiences, observations, feelings, attitudes, etc.

    Synonyms:
    chronicle, log, daybook, journal
  2. a book for keeping such a record.

    Synonyms:
    chronicle, log, daybook, journal
  3. a book or pad containing pages marked and arranged in calendar order, in which to note appointments and the like.


diary British  
/ ˈdaɪərɪ /

noun

  1. a personal record of daily events, appointments, observations, etc

  2. a book for keeping such a record

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

Noun Inflected Forms


Etymology

Origin of diary

1575–85; < Latin diārium daily allowance, journal, equivalent to di ( ēs ) day + -ārium -ary


Explanation

Dear diary, you are a written record of things that happen each day. Some people keep a diary while they’re traveling, others keep their secrets in a diary. Either way, keep out! Some diaries have a pretty cover and a tiny lock with a key, for keeping the contents safe from prying eyes. You can also call such a book a "journal," although traditionally a diary is written in each day, while a journal might have less frequent entries. The word diary comes from the Latin word diarium, "daily allowance," with its root of dies, or "day."

Keep Reading on Vocabulary.com

Vocabulary lists containing diary

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

She says the best way to make a diagnosis is through a food diary or tracking of how often symptoms occur after eating certain foods.

From The Wall Street Journal ● Oct. 12, 2026

"I am quite shocked at my ability to just lie to everyone," the Love Island host said in the castle's diary room.

From BBC ● Oct. 2, 2026

Through reading her mother’s diary entries, Tomlinson began to heal from the impossible standards she set for herself to follow in her mother’s footsteps.

From Los Angeles Times ● Sep. 22, 2026

"Maybe it was my fate to walk in with no legs," she told the diary room.

From BBC ● Sep. 21, 2026

You know, I think my speling is a lot better now than it was when I started this diary.

From "The (Mostly) True Story of Cleopatra's Needle" by Dan Gutman

After Clara died in 1896, her eldest daughter, Marie, purged even more, sharing only limited selections of Clara’s diaries with Clara’s biographer.

From The Wall Street Journal ● Sep. 25, 2026

Liu attracted followers on Chinese social media where he posted religious discussions, video diaries, and clips of himself singing.

From BBC ● Aug. 25, 2026

Anthony Fauci’s diaries tell us what we already knew: Behind every public official’s confident assertions is a fallible human being.

From The Wall Street Journal ● Aug. 18, 2026

The doctor’s recently released Covid-era diaries are only a fraction of the material now in congressional investigators’ hands.

From The Wall Street Journal ● Aug. 6, 2026

No letters, diaries, or interviews with newspapers to offer any clues.

From "In the Shadow of Liberty" by Kenneth C. Davis

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