how do you say fighting in latin?

Answer 1

Translation depends on the context.

as a noun (also translating 'fight') is in Latin either "pugna" (battle), "bellum" (war) or "proelium" (dispute)

as verb I guess the best one for the simple gerund 'fighting' is "Pugnans" (nominative) = pugnans miles (fighting soldier).
Other forms of gerund tense, depending on the context, are :
Pugnandi (of fighting)- genitive
Pugnando (to fighting or by fighting)- dative and ablative
Pugnandum (fighting) -accusative

Answer 2

Some others to consider:

Mars

When used as a common noun, the name of the god of war means 'fighting, battle, warlike spirit'

Armifer/armifera/armiferum (masc/fem/neuter)

This is an adjective that means 'warlike, martial, of war/fighting'

Depending on the use, the endings of these would have to be changed to fit.

Answer 3

Bellum or Duellum=Fighting as in war or combat

Pugilatio=fighting,as in wrestling,boxing

Answer 4

Noun or verb?

Noun -- bellum or pugna

Verb -- bellum gerendum, pugnandum

Answer 5

if i remember correctly, "I fight" is pugno, or something like that.