Beyonce song with the lyric "I talk like this 'cause I can back it up" (3)

Ross

I believe the answer is:

ego

(Other definitions for ego that I've seen before include "number one" , "Conceit - the Latin "I"" , "Self-esteem, conceit" , "Self-confidence" , "Conscious mind" .)

I've seen this clue in the USA Today.

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