“WHAMO” is a valid word. — 13 points Scrabble

how
whoa United Nations agency to coordinate international health activities and to help governments improve health services
hammeat cut from the thigh of a hog (usually smoked)
wha
mowa loft in a barn where hay is stored
mawinformal terms for the mouth
hao10 hao equal 1 dong in Vietnam
hawa spring-flowering shrub or small tree of the genus Crataegus
ohma unit of electrical resistance equal to the resistance between two points on a conductor when a potential difference of one volt between them produces a current of one ampere
moaextinct flightless bird of New Zealand
mhoa unit of conductance equal to the reciprocal of an ohm

oha midwestern state in north central United States in the Great Lakes region
ama radioactive transuranic metallic element; discovered by bombarding uranium with helium atoms
ah
mainformal terms for a mother
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
ow
aw
hoa trivalent metallic element of the rare earth group; occurs together with yttrium; forms highly magnetic compounds
hma metric unit of length equal to 100 meters
moan indefinitely short time
wo
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WHAMO