fighter:
(plural: ‘fighters‘; pronunciation: the letters ‘fi’ rhyme with the letters ‘fi’ in “five” — for the right pronunciaiton, please click here)

fighters in action
a person who fights, for his/her safety, to gain control over others or for sport;
a soldier; a boxer;
a person who has strong physical and mental power and stays strong in any difficult situation or against others by sticking to his/her ideas, morals and principles,

stick fighters in action
After dropping out of middle school, Dave became a street fighter and got in trouble with the law.
Aung San Suu kyi is a relentless fighter fighting for the freedom of Myanmar/Burma.
In our films/movies, we see the lead character, an angry young man fresh out of college and without any formal training or practice in martial arts, knocking out tens of paid fighters without getting his clothes dirty, not even a fleck of dust!
Most professional fighters are known to suffer from serious health issues in the long run.

(a jet fighter)
