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

didengage in
dadan informal term for a father; probably derived from baby talk
adda condition (mostly in boys) characterized by behavioral and learning disorders
pigdomestic swine
digthe site of an archeological exploration
aida resource
dipa depression in an otherwise level surface
pada number of sheets of paper fastened together along one edge
gapa conspicuous disparity or difference as between two figures
piaperennial herb of East Indies to Polynesia and Australia; cultivated for its large edible root yielding Otaheite arrowroot starch
dag10 grams
gadan anxiety disorder characterized by chronic free-floating anxiety and such symptoms as tension or sweating or trembling or lightheadedness or irritability etc that has lasted for more than six months
gid
dap
gipdeprive of by deceit

ida state in the Rocky Mountains
paan informal term for a father; probably derived from baby talk
ada public promotion of some product or service
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
pithe ratio of the circumference to the diameter of a circle; approximately equal to 3.14159265358979323846...
aga soft white precious univalent metallic element having the highest electrical and thermal conductivity of any metal; occurs in argentite and in free form; used in coins and jewelry and tableware and photography

GIDDAP