diary
noun
di·a·ry
ˈdī-(ə-)rē 
plural diaries
1
: a record of events, transactions, or observations kept daily or at frequent intervals : journal
especially
: a daily record of personal activities, reflections, or feelings
2
: a book intended or used for a diary
Examples of diary in a Sentence
has diligently kept a diary since she was 15
Recent Examples on the Web
Bridget Jones's Diary At the start of the new year, Bridget Jones decides to take control of her life and subsequently starts a diary.
—
Madeline Buiano, Martha Stewart, 30 Dec. 2025
Here are some dates for this year's moon-gazing diary.
—Jamie Carter, Space.com, 29 Dec. 2025
The team then conducted interviews, collected food diaries, and asked the patients questionnaires to calculate how much of each dairy product people ate per day.
—Khloe Quill, FOXNews.com, 21 Dec. 2025
Tad’s centennial diary publishes this week in our annual Cartoons & Puzzles Issue, which is brought to life under the stewardship of our cartoon editor, Emma Allen, and puzzles-and-games editor, Liz Maynes-Aminzade.
—David Remnick, New Yorker, 17 Dec. 2025
See All Example Sentences for diary
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Madeline Buiano, Martha Stewart, 30 Dec. 2025
Here are some dates for this year's moon-gazing diary.
—Jamie Carter, Space.com, 29 Dec. 2025
The team then conducted interviews, collected food diaries, and asked the patients questionnaires to calculate how much of each dairy product people ate per day.
—Khloe Quill, FOXNews.com, 21 Dec. 2025
Tad’s centennial diary publishes this week in our annual Cartoons & Puzzles Issue, which is brought to life under the stewardship of our cartoon editor, Emma Allen, and puzzles-and-games editor, Liz Maynes-Aminzade.
—David Remnick, New Yorker, 17 Dec. 2025
See All Example Sentences for diary
Cite this Entry
“Diary.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/diary. Accessed 7 Jan. 2026.
Copy CitationKids Definition
diary
noun
di·a·ry
ˈdī-(ə-)rē
plural diaries
: a daily record especially of personal experiences and thoughts
also
: a book for keeping such a record
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