English Dictionary Offline

An English dictionary that works without the internet. On the metro, on a plane, abroad without roaming. Definitions in English, no translation: you keep thinking in English.

READ WITHOUT GETTING LOST
• Don't know a word in a definition? Press and hold it to open its article
• Tap Back and you're where you left off
• A clean page: the word, how to say it, what it means, how it's used

MORE THAN A TEXTBOOK DICTIONARY
• 200,000+ words and phrases
• 250,000+ example sentences
• Idioms, phrasal verbs and set phrases, under the word they belong to
• Slang and informal English, with labels: (informal), (slang), (offensive), (UK)
• Type "knew", get "know". Type "children", get "child"
• Suggestions as you type, and the right word when you misspell it

HEAR IT
• Listen to any word, with a voice installed on your phone
• British and North American transcriptions, where the source has them

LEARN YOUR WORDS
• Every word you open is saved to your word list
• Sign in with Google once, and your list is the same on all your phones and in the Sekirov English Dictionary extension for Chrome
• Short practice cards with real examples: by definition, by example, by meaning, by ear
• Words come back for review, less often as you learn them
• A morning reminder when words are ready to practise, if you want it

PRIVATE
• After a one-time sign-in, the dictionary works fully offline. The internet is used only for your account and to sync your word list
• No ads. No tracking
• Your words stay on your phone and sync with your account
• Updates come through Google Play

EASY TO READ
• Light and dark themes, or your phone's
• Works with large system fonts

SOURCES
Built from English Wiktionary (https://en.wiktionary.org), written by its contributors and shared under CC BY-SA 4.0. Word counts from Google Books Ngram (https://storage.googleapis.com/books/ngrams/books/datasetsv3.html), shared under CC BY 3.0, were used to choose which words to check for prepositions, to suggest prepositions and to order them. Some word-plus-preposition pairs were taken from or checked against PropBank (https://github.com/propbank/propbank-frames) and Universal Dependencies (https://universaldependencies.org/), shared under CC BY-SA, FrameNet (http://framenet.icsi.berkeley.edu), shared under CC BY, the English Resource Grammar (https://github.com/delph-in/erg), shared under the MIT licence, and VerbNet, under its own licence. Reference for VerbNet: Karin Kipper, Anna Korhonen, Neville Ryant, Martha Palmer, A Large-scale Classification of English Verbs, Language Resources and Evaluation Journal, 42(1), pp. 21-40, Springer Netherland, 2008. Some definitions adapt wording from Open English WordNet (https://en-word.net/), shared under CC BY 4.0, and some were written with Open English WordNet as a reference. Details are in the app: About → Sources and licences.

Needs about 700 MB of free space: the dictionary unpacks on first launch.