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

calla telephone connection
ladya polite name for any woman
claya very fine-grained soil that is plastic when moist but hard when fired
allya friendly nation
dullmake dull in appearance
dulyat the proper time
dualconsisting of or involving two parts or components usually in pairs
lacymade of or resembling lace
aulda Scottish word
cladwearing or provided with clothing; sometimes used in combination
cullthe person or thing that is rejected or set aside as inferior in quality
laudpraise, glorify, or honor
caulpart of the peritoneum attached to the stomach and to the colon and covering the intestines
yuca
acylany group or radical of the form RCO- where R is an organic group
yald
yaud

allquantifier; used with either mass or count nouns to indicate the whole number or amount of or every one of a class
daytime for Earth to make a complete rotation on its axis
laya narrative song with a recurrent refrain
lada boy or man
dala metric unit of volume or capacity equal to 10 liters
cadsomeone who is morally reprehensible
lacresinlike substance secreted by certain lac insects; used in e.g. varnishes and sealing wax
caya coral reef off the southern coast of Florida
cudfood of a ruminant regurgitated to be chewed again

ya
laa white soft metallic element that tarnishes readily; occurs in rare earth minerals and is usually classified as a rare earth
ala silvery ductile metallic element found primarily in bauxite
ada public promotion of some product or service
ay

DUCALLY