List of ~275,000 English words. Derived from the Letterpress word list.

npm:

npm install an-array-of-english-words

var words = require('an-array-of-english-words')

console.log(words.filter(d => /fun/.test(d)))

Yields:

[
  'antifungal',
  'antifungals',
  'bifunctional',
  'cofunction',
  'cofunctions',
  // …and many more
]

Array.<string> — List of all English words, lowercased.

Install the CLI globally:

npm i -g an-array-of-english-words

Now run words to print all the words to stdout:

words

Use grep to filter by pattern:

words | grep cheese

Use egrep to filter with regular expressions:

words | egrep '^fun'            # start with 'fun'
words | egrep 'ification$'      # end with 'ification'
words | egrep 'ou?r$'           # end in 'or' or 'our'

Use wc to find out how many monkey words there are:

words | grep monkey | wc -l

Ten random ten-letter words (note: on macOS, do brew install coreutils to get gshuf):

$ words | egrep '^.{10}$' | gshuf | head -10

• similar-english-words
• an-array-of-spanish-words
• an-array-of-french-words

MIT © Zeke Sikelianos