di·a·ry | \ ˈdī-(ə-)rē \
plural diaries

Definition of diary 

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

Keep scrolling for more

Synonyms for diary


daybook, journal

Visit the Thesaurus for More 

Examples of diary in a Sentence

has diligently kept a diary since she was 15

Recent Examples on the Web

The Sydney Morning Herald reports Victoria’s diary revealed a woman madly in love with her husband, which was somewhat taboo for a 19th-century woman. Rachel E. Greenspan, Time, "Prince Louis' Christening Venue Has a Poignant Tie to Princess Diana. Here's What to Know About the Chapel Royal," 9 July 2018 Presented in a book that looks like a diary, Fab 4 Mania is a joyous voyage back to the years when the Beatles conquered America, complete with Tyler's thoughts and drawings from 1965 of seeing them in concert. Steve Marinucci, Billboard, "'Fab 4 Mania': Cartoonist Carol Tyler Returns to Her Eighth Grade Diary for New Beatles Book," 19 June 2018 But as Alison Flood reports for the Guardian, the recent publication of Einstein’s travel diaries have complicated this perception of him as a staunch humanitarian. Brigit Katz, Smithsonian, "Einstein’s Travel Diaries Reveal His Deeply Troubling Views on Race," 18 June 2018 Albert Einstein's travel diaries from the early 1920s include racist and xenophobic remarks, according to multiple reports. CBS News, "Albert Einstein's travel diaries from 1920s reveal racist views, "unpleasant" comments," 14 June 2018 The girl's diary was later published in more than 60 languages, becoming a landmark account of life during the Holocaust. Andrea Diaz, CNN, "Holocaust survivor who treated Anne Frank in a concentration camp is dead at 95," 11 June 2018 Such are the few passing, mundane details from the Tsaritsa’s diary that have come down to us of the family in their final days and hours. Caroline Hallemann, Town & Country, "Inside the Romanov Family's Final Days," 1 July 2018 Annabella’s attempts to preserve her reputation and other people’s attempts to salvage Byron’s have left a pall of smoke from burning letters and diaries, further obscuring the facts that remain. Constance Grady, Vox, "For Bloomsday, read the bizarrely fascinating story of a Joyce scholar who went missing," 16 June 2018 Rosenkranz wrote in the introduction portion of the travel diary. Kristine Phillips, Washington Post, "Albert Einstein decried racism in America. His diaries reveal a xenophobic, misogynistic side," 13 June 2018

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'diary.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

See More

First Known Use of diary

1581, in the meaning defined at sense 1

History and Etymology for diary

Latin diarium, from dies day — more at deity

Keep scrolling for more

Learn More about diary

Dictionary Entries near diary








Phrases Related to diary

keep a diary

Statistics for diary

Last Updated

10 Sep 2018

Look-up Popularity

Time Traveler for diary

The first known use of diary was in 1581

See more words from the same year

Keep scrolling for more

More Definitions for diary



English Language Learners Definition of diary

: a book in which you write down your personal experiences and thoughts each day


di·a·ry | \ ˈdī-ə-rē , ˈdī-rē \
plural diaries

Kids Definition of diary

1 : a daily written record especially of personal experiences and thoughts

2 : a book for keeping a record of experiences and thoughts

Keep scrolling for more

Comments on diary

What made you want to look up diary? Please tell us where you read or heard it (including the quote, if possible).


a magnificent or impressive array

Get Word of the Day daily email!

Test Your Vocabulary

Name that Food Quiz

Name That Thing

Test your visual vocabulary with our 10-question challenge!

Bee Cubed

Test Your Knowledge - and learn some interesting things along the way.


Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!