“COPLOT” is a valid word. — 10 points Scrabble

coolthe quality of being at a refreshingly low temperature
poolan excavation that is (usually) filled with water
plota secret scheme to do something (especially something underhand or illegal)
toolan implement used in the practice of a vocation
loopfastener consisting of a metal ring for lining a small hole to permit the attachment of cords or lines
coopa farm building for housing poultry
colta young male horse under the age of four
poloVenetian traveler who explored Asia in the 13th century and served Kublai Khan (1254-1324)
lootgoods or money obtained illegally
clota lump of material formed from the content of a liquid
locoinformal or slang terms for mentally irregular
cootslate-black slow-flying birds somewhat resembling ducks
poco
clopthe sound of a horse's hoofs hitting on a hard surface

tooto a degree exceeding normal or proper limits
lot(often followed by `of') a large number or amount or extent
topthe upper part of anything
copuncomplimentary terms for a policeman
potmetal or earthenware cooking vessel that is usually round and deep; often has a handle and lid
looa toilet in Britain
cota sheath worn to protect a finger
coothe sound made by a pigeon
cola pass between mountain peaks
pola person active in party politics
oot
optselect as an alternative over another
lopcut off from a whole

COPLOT