You don't need to know every word. You need to learn how to investigate them.
Word Detective turns unfamiliar English words into cases to solve. Break each word into its prefix, root, and suffix. See where those pieces came from. Watch the meaning assemble itself.
A new word appears. You make a first guess about what it probably means — no pressure.
Reveal the prefix, root, and suffix one piece at a time. Each piece carries a clue.
Get the meaning, the reasoning, the history, and the whole word family — filed for later.
under + earth = existing under the ground
A small sample of the roots, prefixes, and suffixes you'll collect in your Root Library as you play.
15 cases. Increasing difficulty. No login. Your library grows in your browser.