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

bitsa small piece or quantity of something
bootfootwear that covers the whole foot and lower leg
soota black colloidal substance consisting wholly or principally of amorphous carbon and used to make pigments and ink
botsbotfly larva; typically develops inside the body of a horse or sheep or human
boosa cry or noise made to express displeasure or contempt
obita notice of someone's death; usually includes a short biography
bios
obis(West Indies) followers of a religious system involving witchcraft and sorcery
oots
stoba short straight stick of wood

tooto a degree exceeding normal or proper limits
bita small piece or quantity of something
sitbe seated
its
booa cry or noise made to express displeasure or contempt
tis
soba dyspneic condition
bio
botbotfly larva; typically develops inside the body of a horse or sheep or human
oot
boswild and domestic cattle; in some classifications placed in the subfamily Bovinae or tribe Bovini
obi(West Indies) followers of a religious system involving witchcraft and sorcery
bis
sota chronic drinker
siba person's brother or sister

to
itthe branch of engineering that deals with the use of computers and telecommunications to retrieve and store and transmit information
ishave the quality of being; (copula, used with an adjective or a predicate noun)
sothe syllable naming the fifth (dominant) note of any musical scale in solmization
bo
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
bia heavy brittle diamagnetic trivalent metallic element (resembles arsenic and antimony chemically); usually recovered as a by-product from ores of other metals
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
osa mouth or mouthlike opening

OBOIST