combat
Pronunciation: /ˈkɒmbat, ˈkʌm-/
noun
verb ( combats, combating or combatting, combated or combatted)

Origin:
mid 16th century (originally denoting a fight between two people or parties): from French combattre (verb), from late Latin combattere, from com- 'together with' + battere, variant of Latin batuere 'to fight'

Spelling help
The verb forms combating and combated are usually spelled with a single t, although the spellings combatting and combatted are also correct.