Loser, The Defeated
noun
The defeated someone is the loser or the defeated.
はいしゃ
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.
私は敗者にはなりたくありません。
I do not want to be a loser.
勝者から敗者にかける言葉はないんですよ。
There are no words from the winners to the losers.
その歯医者は、生まれながらの敗者であった。
That dentist was born to be a loser.