"Fighting" is the word used to express excited encouragement as in "Go [Insert name of team/person/group], go!" I say it often but I try not to think about how silly I used to think it sounds when I first found out "hwa-ee-teeng" is supposed to be "fighting". I think it might have come from the expression "fighting spirit"... but I'm not sure how "fighting" became so mainstream in the language.
"Good luck on your exam! Fighting!"
"One more goal, guys! We can beat them! Gather around once more! One, two, three, fighting!"
"I know you're having a shitty day, but cheer up! Aja aja fighting!"
