What is Cysgliad?

Cysgliad is a software package for your PC. The package includes two main programs:


Cysill Cysill is a program that identifies and corrects language errors in your Welsh-language documents. It can identify mistyping, misspelling and grammatical errors, including incorrect mutation. In addition to suggesting corrections when needed, the program explains the nature of grammar mistakes when encountered so as to help you avoid making the same mistake in the future

Cysill also includes a mouseover dictionary, which shows the translation of words when hovered over.

Cysill also includes a thesaurus which helps you find different words with similar meanings – a perfect way to improve your vocabulary!

Click here to learn learn more about Cysill
Click here to read Cysill's online manual

Cysill Ar-lein (Online)

Cysill Ar-lein is a free website which enables you to check the spelling and grammar of short Welsh texts on the web using any computer which has an internet connection and runs a modern browser.

Click here to visit the Cysill Ar-lein website.


Cysgeir Cysgeir is a collection of various dictionaries in a convenient electronic format. Cysgeir includes hundreds of thousands of dictionary entries, yet finding the relevant entry is quick and easy thanks to the clever yet simple interface.

Click here to learn more about Cysgeir
Click here to read Cysgeir's online manual

Working together with Microsoft Word, Open and other programs

Cysill and Cysgeir can work as stand-alone programs or as applications called from within Microsoft Word (including Word 2007) or Open 2.3 using buttons located on the tool bar.
The two programs can also work with other programs that allow text editing, using hotkeys which facilitate moving text from one program to the other.

Cysgliad System Requirements

Cysgliad is suitable for PCs running Windows 7, 8 and 10.

Cysgliad for Mac

Cysgliad is available also for the Mac
Click here to visit the Cysgliad i'r Mac website

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