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

ladya polite name for any woman
dutythe social force that binds you to the courses of action demanded by that force
talla garment size for a tall person
allya friendly nation
dullmake dull in appearance
dulyat the proper time
dualconsisting of or involving two parts or components usually in pairs
aulda Scottish word
laudpraise, glorify, or honor
daut
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
tada slight amount or degree of difference
tauthe 19th letter of the Greek alphabet
dala metric unit of volume or capacity equal to 10 liters
lata broad flat muscle on either side of the back
altangular distance above the horizon (especially of a celestial object)
utaa reptile genus of Iguanidae

ata highly unstable radioactive element (the heaviest of the halogen series); a decay product of uranium and thorium
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
taa hard grey lustrous metallic element that is highly resistant to corrosion; occurs in niobite and fergusonite and tantalite
utthe local time at the 0 meridian passing through Greenwich, England; it is the same everywhere

ADULTLY