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

Synonyms

• daybook
• journal

Examples of diary in a Sentence

has diligently kept a diary since she was 15

Recent Examples on the Web

The production of our diaries is like a high-end necktie factory, which, in a day produces many customer’s products simply by continually changing the material on the same production line. —Arthur Zaczkiewicz, WWD, 17 Dec. 2024

In order to preserve their scoop, his editors at Stern had not sought to verify the diaries with handwriting experts. —Clay Risen, New York Times, 14 Dec. 2024

On the Calculation of Volume is a book of hours in its most literal sense, a diary in which Tara tallies each of her November 18ths and her attempts, both hopeful and despairing, to break free from the cycle she is trapped within. —Rhian Sasseen, The Atlantic, 12 Dec. 2024

Keep a bladder diary to track your peeing and sipping. —Erica Sloan, SELF, 9 Dec. 2024

Word History

Etymology

Latin diarium, from dies day — more at deity

First Known Use

1581, in the meaning defined at sense 1

Phrases Containing diary

• keep a diary

Kids 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

Etymology

from Latin diarium "a record of business dealings or activities during the day," from dies "day" — related to meridian, sunday see Word History at sunday