“WISHA” is a valid word. — 11 points Scrabble

washave the quality of being; (copula, used with an adjective or a predicate noun)
his
hashave or possess, either in a concrete or an abstract sense
sawa condensed but memorable saying embodying some important fact of experience that is taken as true by many people
ashthe residue that remains when something is burned
wha
sha
hawa spring-flowering shrub or small tree of the genus Crataegus
ais
wis

ishave the quality of being; (copula, used with an adjective or a predicate noun)
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
hian expression of greeting
ah
ha(astronomy) the angular distance of a celestial point measured westward along the celestial equator from the zenith crossing; the right ascension for an observer at a particular location and time of day
aw
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
sh
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

WISHA