“HACKMAN” is a valid word. — 18 points Scrabble

hanka coil of rope or wool or yarn
khana title given to rulers or other important people in Asian countries
hackone who works hard at boring tasks
macka waterproof raincoat made of rubberized fabric
mana
machAustrian physicist and philosopher who introduced the Mach number and who founded logical positivism (1838-1916)
kana
cham
ankh
amaha woman hired to suckle a child of someone else

canairtight sealed metal container for food or drink or paint etc.
manan adult person who is male (as opposed to a woman)
aahexpress admiration and pleasure by uttering `ooh' or `aah'
nah
maca waterproof raincoat made of rubberized fabric
hammeat cut from the thigh of a hog (usually smoked)
cama river in east central England that flows past Cambridge to join the Ouse River
aha
anamother of the ancient Irish gods; sometimes identified with Danu
nam
ama

anan associate degree in nursing
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
hma metric unit of length equal to 100 meters
naa silvery soft waxy metallic element of the alkali metal group; occurs abundantly in natural compounds (especially in salt water); burns with a yellow flame and reacts violently in water; occurs in sea water and in the mineral halite (rock salt)
kaunknown god; an epithet of Prajapati and Brahma
aaa dry form of lava resembling clinkers

HACKMAN