List of familiar American-English words: The New Dale-Chall (1995).

There’s also a module for the formula.

npm:

npm install dale-chall

var daleChall = require('dale-chall');

daleChall.length; //=> 2942

console.log(daleChall.slice(0, 10));

Yields:

[ 'a',
  'able',
  'aboard',
  'about',
  'above',
  'absent',
  'accept',
  'accident',
  'account',
  'ache' ]

dale-chall exposes a list of strings (Array.<string>).

• buzzwords — List of buzzwords
• fillers — List of filler words
• hedges — List of hedge words
• profanities — List of profane words
• spache — List of simple American-English words (1974)
• weasels — List of weasel words

MIT © Titus Wormer