“INCAGING” is a valid word. — 12 points Scrabble

caningwork made of interlaced slender branches (especially willow branches)
niacina B vitamin essential for the normal function of the nervous system and the gastrointestinal tract
cagingconfine in a cage

agingacquiring desirable qualities by being left undisturbed for some time
icingthe formation of frost or ice on a surface
acingsucceed at easily
acinione of the small drupes making up an aggregate or multiple fruit like a blackberry

gangan association of criminals
gaina quantity that is added
cain(Old Testament) Cain and Abel were the first children of Adam and Eve born after the Fall of Man; Cain killed Abel out of jealousy and was exiled by God
agin
giga
inia

canairtight sealed metal container for food or drink or paint etc.
ainbelonging to or on behalf of a specified person (especially yourself); preceded by a possessive
giglong and light rowing boat; especially for racing
inna hotel providing overnight lodging for travelers
ginstrong liquor flavored with juniper berries
nanyour grandmother
gaga humorous anecdote or remark intended to provoke laughter
nagsomeone (especially a woman) who annoys people by constantly finding fault
ganseparate the seeds from (cotton) with a cotton gin
aniblack tropical American cuckoo

ina unit of length equal to one twelfth of a foot
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)
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

INCAGING