participantしか思い浮かびませんでした

と言うか昔部活でparticipantsの略でパンツって言ってたのを久しぶりに思い出しました


entrant
【noun [countable]】
1.〔競技などへの〕参加者
someone who takes part in a competition
:A-level entrants(O)
:a late entrant(O)
:All entrants in the race should go to the starting line now.(C)

●Japan Times:AUG 11, 2012
Shinichi Yumoto earns bronze medal in 55-kg freestyle wrestling
The Olympic debut of Japan’s entrant in the 74-kg class, Sosuke Takatani, lasted just four minutes as he lost his qualification match against Azerbaijan’s Ashraf Aliyev in two periods without scoring a point.


●Japan Times:OCT 27, 2012
Sweep at Skate America illustrates Japan’s strength early in season
With Ando dropping out and only Haruka Imai competing at Skate America, one of the powerhouses of skating will now have a lone female entrant in three of the six GP events (Skate America, Cup of China, Cup of Russia) and none at the Trophee Bompard in Paris.


2.新加入者
(especially British English)
someone who has recently started studying at university, or working
:new entrants to higher education(L)
:new women entrants to the police force(O)
:university entrants(O)
:There has been an increase in the number of mature entrants to higher education.(O)

●BBC:26 September 2012
Britishisms and the Britishisation of American English
One new entrant into the Merriam-Webster dictionary in 2012 was gastropub (a gentrified pub serving good food), which was first used, according to Kory Stamper, in London's Evening Standard newspaper in 1996, and was first registered on American shores in 2000.


●BBC:1 February 2013
Samsung gains tablet market share as Apple lead narrows
New product launches from the category's top vendors, as well as new entrant Microsoft, led to a surge in consumer interest and very robust shipments totals during the holiday season.