Dictionary: Define Any Word, Hear It, Translate It
Free English dictionary: look up any word for its meanings, examples, synonyms and antonyms, where it comes from, its forms and its translations. Hear it said, read the definitions aloud, save words to your own list and learn them with flashcards and a quiz.
On MES
Calculators, tools and tutorials on mes.fm about this word.
Pronunciation
Where the word comes from
Forms
Synonyms and antonyms
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Related words
In other languages
From Wiktionary's translation tables. Press Translate beside a language to open MES Translate.
My words
No saved words yet. Look up a word and press ☆ Save. Your list stays in this browser.
Save a few words first: each card shows a word, and turns over to its meaning. Words you know come back less often.
The quiz uses your saved words: save at least one word (with its meaning) to start. Wrong answers come from your list and our word-of-the-day list.
Everyone gets the same word each day. Here are this week's.
A free English dictionary with pronunciation, translation and your own word list
Type any English word and press Define (or Enter). You get every meaning, grouped by part of speech (noun, verb, adjective ...), with labels such as mathematics, informal or transitive, example sentences, and the synonyms and antonyms for each meaning. Every underlined word in a definition can be looked up with one press, so you can follow a word you don't know without leaving the page. Below the meanings: where the word comes from (its etymology), its forms (plural, past tense, comparative), related and derived words, and the word in other languages.
Hear it, read it aloud, translate it
Hear it says the word with a voice on your device; the Pronunciation box adds the syllables with the stressed one marked, the IPA, an easy respelling and recordings of real speakers from Wikimedia Commons, with a link to MES Pronounce for slow and syllable-by-syllable playback. Read aloud reads the definitions, lighting up each one as it goes. Translate opens the word in MES Translate in the language you choose.
Save words and learn them
Press Save to keep a word and its meaning in your list. Flashcards show a word and turn over to its meaning; the ones you know come back less and less often (1, 2, 4, 8 and 16 days), the ones you miss come back at once. The Quiz gives a meaning and four words to choose from. Make a backup file, restore it on another computer, or share your list as a link.
Questions
- Where do the definitions come from?
- From Wiktionary, the free dictionary written by volunteers, under the Creative Commons Attribution-ShareAlike licence (CC BY-SA 4.0). Each entry links to its Wiktionary page. When Wiktionary cannot be reached, the page tries the free dictionaryapi.dev, which is also built from Wiktionary. Syllables and IPA come from the CMU Pronouncing Dictionary (BSD licence), the same data as MES Pronounce. The word of the day and its short meaning are written by MES.
- Can I link to a word?
- Yes: the address mes.fm/define?w=serendipity opens that word. Share copies it, or opens your phone's share menu.
- What is "On MES"?
- When a word is the subject of an MES calculator, tool or tutorial (percentage, torsion, orbit, inflation ...), those pages are shown as cards under the definition.
- Is anything sent or saved?
- The word you look up is sent to Wiktionary (and dictionaryapi.dev if needed) to fetch its entry. Your saved words, recent lookups and flashcard progress stay in this browser only; nothing is stored on mes.fm.