diary
Americannoun
-
a daily record, usually private, especially of the writer's own experiences, observations, feelings, attitudes, etc.
-
a book for keeping such a record.
-
a book or pad containing pages marked and arranged in calendar order, in which to note appointments and the like.
noun
-
a personal record of daily events, appointments, observations, etc
-
a book for keeping such a record
Other Word Forms
Etymology
Origin of diary
1575–85; < Latin diārium daily allowance, journal, equivalent to di ( ēs ) day + -ārium -ary
Explanation
Dear diary, you are a written record of things that happen each day. Some people keep a diary while they’re traveling, others keep their secrets in a diary. Either way, keep out! Some diaries have a pretty cover and a tiny lock with a key, for keeping the contents safe from prying eyes. You can also call such a book a "journal," although traditionally a diary is written in each day, while a journal might have less frequent entries. The word diary comes from the Latin word diarium, "daily allowance," with its root of dies, or "day."
Vocabulary lists containing diary
TEKS ELAR Academic Vocabulary List (5th-7th grades)
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
Lesson 2–3
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
Excerpt from "Kira-Kira"
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
If you've had it in your diary since last year, or if you bagged tickets at the last minute, here's what you need to know.
From BBC • Jun. 10, 2026
It is also recorded in her diary, which recounts how she took an early coach to London costing £14, then a train and then a taxi.
From BBC • Jun. 8, 2026
But he never made it to the top and eventually dropped down to the unglamorous Millwall club in South London, where he produced a diary that perfectly captures the life of a journeyman pro.
From The Wall Street Journal • Jun. 4, 2026
Among the trove of evidence, from candid emails and private text messages to meeting notes, was Brockman’s private diary, which became something of a star witness.
From The Wall Street Journal • May 16, 2026
“We are getting ahead very slowly,” Cherrie wrote in his diary.
From "Death on the River of Doubt" by Samantha Seiple
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
