“INFIGHTING” is a valid word.

hit(baseball) a successful stroke in an athletic contest (especially in baseball)
fita display of bad temper
giglong and light rowing boat; especially for racing
inna hotel providing overnight lodging for travelers
tina silvery malleable metallic element that resists corrosion; used in many alloys and to coat other metals to prevent corrosion; obtained chiefly from cassiterite where it occurs as tin oxide
ginstrong liquor flavored with juniper berries
finthe cardinal number that is the sum of four and one
gita person who is deemed to be despicable or contemptible
figa diagram or picture illustrating textual material
nita luminance unit equal to 1 candle per square meter measured perpendicular to the rays from the source
hinancient Hebrew unit of liquid measure = 1.5 gallons
nthlast or greatest in an indefinitely large series
ghi

itthe branch of engineering that deals with the use of computers and telecommunications to retrieve and store and transmit information
ina unit of length equal to one twelfth of a foot
if
hian expression of greeting
tia light strong grey lustrous corrosion-resistant metallic element used in strong lightweight alloys (as for airplane parts); the main sources are rutile and ilmenite

INFIGHTING