It is actually a new spelling form for what used to be کلا meaning "completely". In fact, These days Iranians have changed lots of words with Arabic spelling when chatting, texting, posting on the internet; neglecting the fact that the words themselves are Arabic originally. Some examples are مثلا، (for example)----> is now spelled مثلن اصلا (never, no way)-----------> اصلن کلا (completely) ------------> کلن and many others. Hope it can help.

I think you want to say 'Kollan' کلاً It is actually an Arabic phrase, meaning 'the whole' or 'for everything', 'any', 'basically', 'at all', etc. in Persian. It is constructed from 'kol (all) + Arabic Tanvin' An example: I don't like him at all/ I don't like any of his actions = 'man kollan az ou badam miaayad' In Persian: من کلاً از او بدم می‌آد My overall performance was good: man kollan khoob kar kardam In persian: من کلاً خوب کار کردم

"kollan" means "totally" and "kamelan" means "completely". They both words are almost the same.

I think the best translation for "kollan" in English is "generally".