Searched Words

             Simply start typing...

                                  hover over anything.

How To Use
To instantly find definitions and synonyms, simply start typing a word.

Hover over or arrow to any suggesions to see their definitions as well.

Don't know the meaning of a word in the definition? Want a synonym of a synonym?
Just hover over the word, and a tooltip will pop up with the definition.
Hints: To quickly clear search field, press Ctrl + Backspace
Our goal is to make searching for definitions and synonyms instant, intuitive, and effortless. No changing pages. No clutter. No distractions.
Reading a book? With InstaDefine, you no longer have to find the act of looking up words arduous. It's just a natural and fun way to increase your vocabulary.
Writing a paper? Ever find a definition you didn't understand? Now you can hover over any word in the definition without leaving the page.
Quite simply, it's the fastest way to download words you are seeking into your brain.
InstaDefine was created by Prabhav Jain and Jacob Cole. It was programmed in HTML, CSS, Javascript (JQuery), AJAX, MySQL, and PHP. The dictionary is based on Princeton Wordnet.
Contact Us
We are committed to building the most convenient dictionary on the planet. Please feel free to email us with any comments, suggestions, bugs, etc at info[at]