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 of diary

• journal

Examples of diary in a Sentence

has diligently kept a diary since she was 15

Recent Examples on the Web

Leading up to the hearing, Paul released more than 1,000 pages of Fauci’s personal diary covering the pandemic years. — Lauran Neergaard, Los Angeles Times, 29 July 2026

Fauci’s diary includes details on the now-famous conference call of February 1, 2020. — Steve H. Hanke, Fortune, 29 July 2026

Critics noted the diaries seemed to boast of his COVID-19 fame, despite widespread criticism and the efforts of countless healthcare workers. — Steve Brozak, Forbes.com, 29 July 2026

The senator recently released more than 1,000 pages of Fauci’s personal records, including his pandemic-era diary, and several batches of documents pertaining to the origins of the coronavirus. — David Zimmermann, The Washington Examiner, 29 July 2026

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

Rhymes for diary

• fiery
• friary
• priory

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