Trynothlete

The complete opposite of a triathlete, some one who does no physical exercise whatsoever, can be called a trynothlete.

You know he just lies on the couch all day, he is a total trynothlete!

Trynothlete by leilawurm October 25, 2015

Tryathlete 

A person who thinks they can complete a triathlon without much training and fails miserably when they try.

That guy talked so much trash but he's only a tryathlete. He DNF'd (did not finish) by almost drowning during the swim.

Tryathlete by Skivy January 13, 2009

Tryathlete 

Someone who trys to be an athlete.

I'm a tryathlete, I always try to get to out of the house to train, but there are too many distractions in my fridge

Tryathlete by Pareta August 27, 2016