sexのようなどんな単語でも探してください。
 
1.
The faculty of making fortunate discoveries by accident.

Modified meaning: of or pertaining to being "cool" or "sweet"

"Oh, man, it's totally serendipitous."
teah4によって 2008年04月23日(水)
 
2.
another word for "cool" "awesome" or "amazing". used in Fineus (not sure how to spell it...) and Pherb.
hey that shirt is totally serendipitous.

megan, you're so serendipitous!
hey kid supによって 2009年05月14日(木)
 
3.
An expression used by individuals to sound confident and smart when explaining why something is successful, but in reality they have no fucking clue. The individual often believes they are the only person to ever have used this word in a sentence, and will often wear a shit-eating grin upon saying it.
Twitter is so successful because it was built to leverage serendipitous social connections. :)
serendipitous definerによって 2009年11月13日(金)