“AUSUBO” is a valid word. — 8 points Scrabble

boasa long thin fluffy scarf of feathers or fur
suba
abosa dark-skinned member of a race of people living in Australia when Europeans arrived

busa vehicle carrying many passengers; used for public transport
suba large sandwich made of a long crusty roll split lengthwise and filled with meats and cheese (and tomato and onion and lettuce and condiments); different names are used in different sections of the United States
absany of a class of composite plastics used to make car bodies and cases for computers and other appliances
soba dyspneic condition
boaa long thin fluffy scarf of feathers or fur
soua former French coin of low denomination; often used of any small amount of money
bas
sau
boswild and domestic cattle; in some classifications placed in the subfamily Bovinae or tribe Bovini
aboa dark-skinned member of a race of people living in Australia when Europeans arrived
sab

sothe syllable naming the fifth (dominant) note of any musical scale in solmization
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
usNorth American republic containing 50 states - 48 conterminous states in North America plus Alaska in northwest North America and the Hawaiian Islands in the Pacific Ocean; achieved independence in 1776
bo
baa soft silvery metallic element of the alkali earth group; found in barite
aba bachelor's degree in arts and sciences
osa mouth or mouthlike opening

AUSUBO