Looking a word up without opening a browser
Most people look words up in a browser, which works and teaches nothing. A real dictionary app gives you the part of speech, the pattern the word takes, the register, and an example that shows how it is actually used, all without a connection once the data is downloaded. The distinction that matters most is not which publisher you prefer: it is whether you need a learner's dictionary, which explains how to use a word, or a native dictionary, which assumes you already know.
Which kind of dictionary you need
| What you are doing | The kind that helps | What to check |
|---|---|---|
| Reading and meeting an unknown word | Any general dictionary | That it works offline |
| Writing in English as a second language | A learner's dictionary | Usage notes and patterns |
| Finding a better word | A thesaurus with examples | That it distinguishes register |
| Translating a phrase, not a word | A parallel-text or context tool | Real sentences, not word swaps |
| Settling an argument about spelling | A named, dated dictionary | Which variety of English it records |
| Building vocabulary that stays | A dictionary plus a review app | Export, or a share-to-deck route |
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The apps
Dictionary.com. The fastest general lookup with a decent thesaurus attached, and the interface most people find immediately obvious. Advertising supported, with an offline download in the paid version.
The reference American dictionary, with pronunciation audio and clear etymologies. The one to cite when the question is what a word means in American English.
The Free Dictionary. Aggregates several dictionaries, a thesaurus, idioms and medical and legal glossaries in one search, which makes it the best single app when you do not know which kind of dictionary you need.
WordWeb. Fully offline, fast, and strong on related words and word relationships rather than only definitions. A long-standing favourite for crosswords and for writing.
A licensed Oxford dictionary and thesaurus in one app, with a genuine offline database. Paid, and the most complete British English option of the set.
The Oxford Advanced Learner's Dictionary: definitions written in a controlled vocabulary, with grammar patterns and usage notes. If English is not your first language, this is the one that answers the question you actually had.
The publisher's lighter search app, useful when you want a quick authoritative answer rather than a full offline library.
A grammar and punctuation reference rather than a checker: it explains the rule instead of silently applying it. The right tool when you want to learn the thing once.
Linguee. Looks a word up and shows it inside real sentences from translated documents, side by side. Unmatched for finding out how a phrase is genuinely used rather than how it could be.
The same idea with a larger example base and a built-in review list, so a phrase you looked up can become something you practise.
For whole sentences, and for checking your own writing by translating it back into your first language. Noticeably better than the alternatives at sounding like a person.
The one with camera translation and downloadable language packs. A tool for signs, menus and getting the gist, not a reference for how English works.
A keyboard with correction and rephrasing built in, which catches mistakes as you type rather than after. Read what it sends where before you make it your only keyboard.
A focused grammar and punctuation checker for a paragraph you are about to send. Paste, check, decide, rather than installing something that watches everything you write.
One word a day with an example, as a widget. The least ambitious app here and the one most likely to still be installed in six months.
Spaced repetition for the words you looked up. Fifty words you actually met will outperform any prebuilt list of a thousand, and this is the tool that makes them stick.
Faster to start than the previous one, with shared sets for most textbooks and exams. Less powerful, considerably less setup.
Reads your own writing back to you. Hearing a sentence is the most reliable way to find the clause that does not work, and it costs nothing in effort.
Making lookups take two seconds
- Download the offline data on WiFi, once Then check it with the radios off. An app that needs a connection is an app you cannot use on the underground, which is where most reading happens.
- Learn the select-and-share route Highlight a word anywhere on the phone, share, dictionary. Most apps register themselves as a share target and it is faster than switching apps.
- Turn on the floating or clipboard lookup if the app has one Copying a word and having the definition appear is the shortest path there is, and several of these support it.
- Set the variety of English deliberately British, American or another. Mixed spelling in one document is the most visible sign that a text was assembled rather than written.
- Send new words somewhere, immediately A review app, a note, anything. A word looked up and not recorded is a word you will look up again next month.
- Keep one learner's dictionary even if English is your first language The usage notes explain patterns most native speakers use correctly and cannot articulate, which is exactly what you need when editing somebody else's writing.
Grammar tools, honestly
- Typographical errors and agreement
- Punctuation inside a long sentence
- Repeated words and doubled spaces
- Flagging a sentence nobody can parse
- Explaining a rule, where they do explain
- Knowing what you meant
- Technical vocabulary and names
- Deliberate style and rhythm
- Quoted text and dialect
- Anything where being wrong matters and nobody checks
The failure mode of a rephrasing tool is not error: it is flattening. Accept the corrections that are corrections and refuse the ones that only make a sentence sound like every other sentence. For anything that matters, read it aloud, or have the phone read it to you, which catches more than any checker.
One learner's dictionary, one general dictionary downloaded for offline use, a context tool for phrases, and somewhere to put the words so you only look them up once.
Frequently asked questions
Is a paid dictionary worth it?
If you want a complete licensed dictionary that works with no connection, yes, and it is usually a single payment rather than a subscription. For occasional lookups the free apps are perfectly adequate.
Which dictionary should a learner of English install?
A learner's dictionary, not a native one. The definitions are written in a limited vocabulary and, more importantly, they show the grammar pattern each word takes.
Are translation apps a substitute for a dictionary?
No. A translator gives one equivalent and hides the ambiguity; a dictionary shows you the range of meaning and the register. Use a translator for a sentence and a dictionary for a word.
How do I stop looking the same word up repeatedly?
Record it the moment you look it up, in a review app or even a plain note. Recognition comes from meeting a word several times, and the app's own history is not a review system.
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