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Categories: Education & Reference
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Current Version: 1.2
Release Date: Released 14 Jul 2010
Memory Size: 0.2 MB
"The Definitive Guide to English Root Words."

"Quickly learn the meaning of any Prefix or Suffix."

"A Handy English Language Reference."

How would you like to be able to look up English language roots on on your iPhone or iPod Touch? Now you can, with the PrefixSuffix app! PrefixSuffix provides not only a "quick chart" of common word roots but also a built-in search engine you can use to search all its roots or their meanings. No internet connection required!

PrefixSuffix is brought to you by the same folks who put together and fine-tuned, the world's only complete and dedicated English language prefix, suffix, and syllable root words website. The PrefixSuffix app uses the same root word database and builds upon the software technology of its companion website.

  • CHART MODE: Displays a scrollable reference chart of common word roots
  • SEARCH MODE: Search the entire database of over 2,000 roots
  • SETTINGS: Change the font size and application's parameters

Any root word entry can be expanded to show more detail and whether it is in one of the following classifications: Botany/Biology, Chemistry, Geology, Medicine, Geopolitics or Zoology.

You can keep your place in the chart while performing a separate search. On the table display, you can choose to either include the example words to get a better feels for the root words or exclude them to get more root word entries onto the screen.

You can increase the size of the font for better readability or decrease the font size to squeeze even more root word entries onto the screen. The app allows you to rotate it into landscape from which you can see more of the meanings and examples at one glance.

Also, the app has a built-in single-tap quick-link to, the website from which it sprung. By the way, you might like to check out's extensive resources such as its exclusive "Rooty" and "Meany" educational games.

  • Includes a chart of common root words
  • Built-in search on root word, meaning or example words
  • Tap on root word entry to get details
  • Root word classifications: Botany/Biology, Chemistry, Geology, Medicine, Geopolitics & Zoology
  • No Internet connection required
  • Separate chart and search areas
  • Two-line example and one-line summary modes
  • Adjustable text size to optimize viewing
  • Flexible rotatable views
  • Links to
  • Works on all iPhones and iPod Touches
  • No advertisements


  • Compatible with iPhone (1st Gen and 3G)
  • Compatible with iPod Touch

(none submitted yet)


Screenshots from the PrefixSuffix app:

PrefixSuffix chart view PrefixSuffix detail view PrefixSuffix search view
PrefixSuffix example verb search PrefixSuffix settings view
User Guide

When you first launch the app, you see a common root "quick chart" that you can scroll up or down in and even filter. To filter the chart and show fewer root word entries, tap the chart's filter bar at the top center of the screen and type in a few letters of the root word you are interested in. Interested in meanings instead? No problem! Just tap the button that says "Roots," and it will change to "Meanings" at which point the filtered view will now be for the meanings of root words.

Be careful not to type too many letters as you might end up with no matches and therefore a blank screen. As you type each letter, the filter narrows, and you can tap the keyboard's Done button to see all your results.

Similarly, if you remember an example word but forgot what was its applicable word root, you can tap the button again until it says "Examples," and now the filtered view will be for the example words.

The default "quick chart" contains only the most common root words, as determined at the companion site If you would like a large common root chart, tap the Settings tab on the Tab Bar at the bottom of the screen, then select "More Roots" for Chart Contents. This setting will give you approximately 30% more roots in your chart.

If your root word interests lie outside of the common ones, do not fear! Tap Search on the Tab bar, and you will see a message appear "Type at least two letters in this search box above, and results will appear here." Here the PrefixSuffix app is stealing this user's guide's thunder -- anyway, do what it says. Type in at least two letters into the search bar at the top of the screen, and you will see search results not from the chart but from the entire root word database.

As a note, the search box works almost identically to the chart's filter except that you need at least two characters to trigger results. (We'd show results for one character if the view wasn't so huge as a result of the comprehensive root word database we have assembled!)

The chart and search are independent features of the app, so you can maintain your position in the chart while breaking away temporarily to do more refined searches.

To the left of some of the root word entries, you may have noticed one or more blue letters. These are the optional classifications as set by the staff: 'B' for Botany/Biology, 'C' for Chemistry, 'G' for Geology, 'M' for Medicine, 'P' for geoPolitics, and 'Z' for Zoology. Would you like a legend? It's on the Settings tab. Need a crutch? Just tap on a root word entry to get its detail, and all of its classifications will be spelled out for you.

That single bar in the screen's top left controls the summary mode where there is only one line per word root entry less the example words. Go ahead, tap it. See how you get more root words on screen now? Some people prefer this view even though you now have to tap into the details to see the example words.

See how the single bar changed into a double bar after you tapped it? That means that, if you tap it again (go ahead), you will revert back to the two-line root entry view that includes the example words.

If you need larger text, you can tap Settings on the tab bar and slide the Text Size slider to the right. If you would prefer smaller text and possibly more root words onto a screen, you can move the slider to the left. You'll be able to estimate the relative change to the font size by monitoring the changing values of the point (pt) setting.

On the bottom of the Settings view, the Instructions button takes you to this app's webpage and the "go to" button takes you to the companion online reference which has some additional resources and educational games.

We apologize if most of this was obvious from the app itself. We did try to make the app self-explanatory. Our experience is that some users like to have a one-stop guide, so here it is, or was, or here it is for you anytime. Anyway, enjoy the app! May it be a useful tool in your virtuous quest for more information about the English language.

FAQs & Support

How do I use the PrefixSuffix app?

Download and install it from the App Store and then run it. Instantly, you will see a root chart that you can scroll up and down. From there, you can tap on the "Search" tab to search the entire root word database. For more instructions, please see the User Guide.

Will this app work on an iPod Touch?


Does this app need a constant Internet connection?

No, the root word database is built into the app. You would need an Internet connection only to use the link to the app's companion website

Will there be updates?

Of course! As with most apps, we will release any changes or improvements periodically.

I've rotated the device, and now I have fewer but wider lines of root words. Is that normal?

Yes, you are using the landscape or horizontal view to see more of the text for those root word entries of interest to you. You can also tap on any entry and have its data expanded to the entire screen if you like.

May I make comments or suggestions?

Yes, please do! We are always looking to improve our products. You can reach us at this email address.


5 Jun 2009, Version 1.01, initial release.

14 Jul 2010, Version 1.2, adapted for iOS 4.

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