“RATBAG” is a valid word. — 9 points Scrabble

baga flexible container with a single opening
bara room or establishment where alcoholic drinks are served over a counter
artthe products of human creativity; works of art collectively
ratany of various long-tailed rodents similar to but larger than a mouse
batnocturnal mouselike mammal with forelimbs modified to form membranous wings and anatomical adaptations for echolocation by which they navigate
taga label written or printed on paper, cardboard, or plastic that is attached to something to indicate its owner, nature, price, etc.
braan undergarment worn by women to support their breasts
tabthe bill in a restaurant
raga small piece of cloth or paper
tarany of various dark heavy viscid substances obtained as a residue
gablight informal conversation for social occasions
baathe cry made by sheep
garprimitive predaceous North American fish covered with hard scales and having long jaws with needlelike teeth
agatitle for a civil or military leader (especially in Turkey)
gata gangster's pistol
abaa loose sleeveless outer garment made from aba cloth; worn by Arabs
arbsomeone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential)

ata highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
taa hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
baa soft silvery metallic element of the alkali earth group; found in barite
ara colorless and odorless inert gas; one of the six inert gases; comprises approximately 1% of the earth's atmosphere
aaa dry form of lava resembling clinkers
aba bachelor's degree in arts and sciences
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

RATBAG