Je was op zoek naar: downright (Engels - Swahili)

and the downright rude:
na wengine walikuwa hawana adabu:

downright crazy muslim:
waislamu wajinga kabisa:

examples of the downright crazy muslim are osama bin laden, ayman al zwahiri, all of al qaeda, the taliban.
mifano ya waislamu wajinga kabisa ni osama bin laden, ayman al zwahiri, al qaeda wote, na wanamgambo wa taliban.

and every time i called them that you may forgive them, they thrust their fingers into their ears, and covered themselves with their garments, and became wayward, and behaved with downright insolence.
na hakika mimi kila nilipo waita ili upate kuwaghufiria, walijiziba masikio yao kwa vidole vyao, na wakajigubika nguo zao, na wakakamia, na wakatakabari vikubwa mno!