Literally "God is great" in Arabic. Nice thought, however...

what is said by people beheading hogtied victims "in the name of God"

or what is said by someone in a carbomb seconds before he fires it off in a crowded marketplace.

ALLAHU AK BAR is a term coined by terrorists. It is often yelled before the ensuing explosion. Run away as fast as possible if you hear it.

"Allahu akbar" means "The Lord is the most magnificent" in arabic and you often hear this during muslim prayer ceremonies and adhan(Islamic call to worship) and you might hear it from a muslim worshiper recited repeatedly as a short prayer phrase. The aforementioned practice is called "Dhikr" which is comparable with rosary of catholic tradition.Unfortunately as in the islamic world the institution of religion is comandeered by islamists, for many non-muslims this phrase has become an ominous slogan associated with belligerent radical islamists or worse, a battle cry of terrorists for people too often hear it from suicide bombers propagandizing other devoted muslims into acknowledging their horrendous cause as pious.

In Arabic, this phrase means "God is great" or "Allah is greater".

In all other languages, it is largely taken to mean "TAKE COVER!" or "RUN!"

A phrase meaning "God is great" in Arabic. For everyone else, it is a warning for an explosion or terrorists.

Actually means "God is the Greatest" but Isis uses this incorrectly. Isis however is actually the complete opposite of Islam.

Celebration for anything and everything that exists in the world.