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Definition of diary
diary
/ˈdaɪ.ə.ɹi/
di · a · ry
Plural:diaries
•Adjective:diaristic
diary Lexical Profile
CEFR
A2
Grade
3
Tier
1
Usage
Top 5k
diary Game Scores & Validity
Scrabble US
Scrabble UK
WWF
Wordle Guess
• noun
1
A physical book or digital document in which one keeps a daily record of events, experiences, and personal thoughts.
Example
"She wrote in her diary every evening to process the complex emotions she felt during the day."
2
British An appointment book or calendar used for planning daily activities, scheduling meetings, and noting future engagements.
Example
"Let me check my diary to see if I am available for a lunch meeting next Thursday."
Synonyms
View all synonyms for diaryWord Nuance & Usage
Frequently misspelled as 'dairy', which refers to milk production and products.
• Rhymes for diary
Word Origin & Etymology
From the late 16th century: via Latin 'diarium' meaning 'daily allowance' or 'daily journal', derived from 'dies', meaning 'day'.
Usage Trend
Historical frequency of usage in published text.
180019102020
Data source: Google Books Ngram Viewer
Cite this Entry
Wordmom. (2026). Definition of Diary. In Wordmom Dictionary. Retrieved Oct 16, 2026, from https://wordmom.com/dictionary/diary