What is English of diligan?

"Diligan" is not a standard English word. It's likely a misspelling or a word from another language.

Could you please provide more context or information about where you encountered this word?

For example:

* What language is it from?

* What is the meaning in that language?

* What was the sentence or situation where you saw this word?

With more information, I can help you find the correct English translation.