Historical Encyclopedia is a free offline dictionary with more than 21000 entries. The entire database is stored on your device so it works with no internet connection no registration and no hidden limits.

Search a word hear it keep it and turn it into something you remember.

AI HELPER
• Ask AI about any word: definition & context synonyms pronunciation guide example sentences
• Word not in the dictionary? Find it with AI and add it to your own database
• AI can write the description for the words you add yourself
• Keep any AI answer as the word description or save it as a note

THE DICTIONARY FULLY OFFLINE
• 21000 entries 100% offline
• Instant results as you type
• Search filters: starts with ends with
• Search the text you copied to the clipboard
• Random word button
• Add your own words and edit existing entries

LEARNING TOOLS
• Flashcards — the classic way to memorise new vocabulary
• Quiz — multiple choice test on your own words
• Listening — hear the word and choose the right answer
• Word game — guess the hidden word in 4 to 7 letters with statistics and win streaks
• Build your own training sets: pick the source the number of words the order and the difficulty
• Start a training session straight from your favourites bookmarks or history
• See what you got right and repeat only the words you missed

KEEP YOUR WORDS IN ORDER
• Favourites — save a word with one tap
• Bookmarks — colour-coded folders for your own topics
• Notes — attach your own note to any word
• History — every word you looked up sorted by date name or view count
• Multi-select mode: export listen to bookmark or delete many words at once
• Export your word lists to a text file and share them

LISTEN AND PRONOUNCE
• Listen to the word and to its full description
• Clear pronunciation for every entry
• The built-in player reads whole word lists at 0.5x 1x or 2x speed
• Playback continues with the screen off

WIDGETS
• Word of the day widget
• Word list widget
• Training widget — learn without even opening the app

WORD REMINDERS
• Receive a word as a notification during the day
• Choose the time the weekdays and the source: random favourites bookmarks or history

SET IT UP YOUR WAY
• Dark mode and automatic night mode
• Adjustable text size and interface colour
• Show hide and reorder the tabs — keep only what you use
• Interface available in English Русский Español Italiano Deutsch Français Türkçe Azərbaycan Українська
• Select text in any other app to search it here or add it to your dictionary
• Full tablet and landscape support

One app several jobs: Historical Encyclopedia an offline reference with no connection required a vocabulary trainer and a learning companion.

This is an offline dictionary — the database is kept on your device so it needs some storage space.

Suggestions comments and legal questions: [email protected]