Tanween is a special symbol of doubled fathah, kasrah or dammah. In English it is also called «nunation». Here is what it looks like:
It is only met at the end of a word and is read as:
— «an» — when it is in the form of double fathah
— «in» — when it is in the form of double kasrah
— «un» — when it is in the form of double dammah
That is, when you see a sign of doubled fathah, kasrah or dammah, you just add the letter «n» at the end of a word.
These three types of tanween have their own names:
— «an» — tanween-fathah
— «in» — tanween-kasrah
— «un» — tanween-dammah
It also needs to be known that tanween-dammah can be written in the following ways:
Examples of letters with tanween (read from right to left):
An important point is that you can often meet alif without any vowels after tanween-fathah, as in the examples above. We don't need to know why it is there yet, but we need to know that this «alif» is not read.
Examples of words with tanween (read from right to left):