Al Mutakabbir – The Majestic The Supreme

The One who is supremely great. The One who is greater than all of creation.

“He is Allah than Whom there is La ilaha illa Huwa (none has the right to be worshipped but He) the King, the Holy, the One Free from all defects, the Giver of security, the Watcher over His creatures, the All-Mighty, the Compeller, the Supreme. Glory be to Allah! (High is He) above all that they associate as partners with Him.”
(59:23) The Holy Quran

From the root
k-b-r with the 
classical Arabic
connotations:
to be great in
size, rank or
dignity
to be great in
size, to be
vast, formidable
to be great in
age, oldest
to be great in
dignity, noble,
majestic.

Allah  is supremely great. The One who is greater than all of creation.
He manifests greatness in all things and in all ways.
He has rights, privileges and attributes which others have not.

Al-Mutakabbir is the One Who possesses all greatness, who is above having any of the qualities of His creatures, who is above being harmed by the oppressors among His creation, Whose greatness and pride are the supermost.