“INSIGNIA” is a valid word.

signa perceptible indication of something not immediately apparent (as a visible clue that something has happened)
singdeliver by singing
gaina quantity that is added
sangNorth American woodland herb similar to and used as substitute for the Chinese ginseng
snaga sharp protuberance
innsa hotel providing overnight lodging for travelers
nagssomeone (especially a woman) who annoys people by constantly finding fault
ginsstrong liquor flavored with juniper berries
anisblack tropical American cuckoo
nisinot final or absolute
agin
sain
nansyour grandmother
ains
inia

ainbelonging to or on behalf of a specified person (especially yourself); preceded by a possessive
gasthe state of matter distinguished from the solid and liquid states by: relatively low density and viscosity; relatively great expansion and contraction with changes in pressure and temperature; the ability to diffuse readily; and the spontaneous tendency to become distributed uniformly throughout any container
sinestrangement from god
inna hotel providing overnight lodging for travelers
ginstrong liquor flavored with juniper berries
nanyour grandmother
nagsomeone (especially a woman) who annoys people by constantly finding fault
insan agency in the Department of Justice that enforces laws and regulations for the admission of foreign-born persons to the United States
ganseparate the seeds from (cotton) with a cotton gin
saga shape that sags
aniblack tropical American cuckoo
ais

ishave the quality of being; (copula, used with an adjective or a predicate noun)
ina unit of length equal to one twelfth of a foot
asa very poisonous metallic element that has three allotropic forms; arsenic and arsenic compounds are used as herbicides and insecticides and various alloys; found in arsenopyrite and orpiment and realgar
anan associate degree in nursing
naa silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)
sia tetravalent nonmetallic element; next to oxygen it is the most abundant element in the earth's crust; occurs in clay and feldspar and granite and quartz and sand; used as a semiconductor in transistors
aian agency of the United States Army responsible for providing timely and relevant and accurate and synchronized intelligence to tactical and operational and strategic level commanders
aga soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography

INSIGNIA