“DATCHA” is a valid word. — 12 points Scrabble

dataa collection of facts from which conclusions may be drawn
chatan informal conversation
chada small piece of paper that is supposed to be removed when a hole is punched in a card or paper tape
tachmeasuring instrument for indicating speed of rotation
acta

hadhave or possess, either in a concrete or an abstract sense
acta legal document codifying the result of deliberations of a committee or society or legislative body
catfeline mammal usually having thick soft fur and no ability to roar: domestic cats; wildcats
aahexpress admiration and pleasure by uttering `ooh' or `aah'
hatheaddress that protects the head from bad weather; has shaped crown and usually a brim
aha
tada slight amount or degree of difference
dahthe longer of the two telegraphic signals used in Morse code
cadsomeone who is morally reprehensible

ata highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
ah
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
ada public promotion of some product or service
taa hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
aaa dry form of lava resembling clinkers

DATCHA