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1) One who sets trends.

2) One who is a complete and total boss.

3) A person who is a leader by example and influence.

4) Someone who attracts followers who follow the trends set by him/her.

5) The correct spelling of the word "trendsetter".
"John was playing Doodle Jump on his iTouch today, and now everybody is doing it. He is such a trendsettah."
by TRENDSETTAH April 29, 2010