There is no seven letter word spelled with the letters DDNNIIA.
Words that can be spelled with those letters are:
The jumbled word "wterpbaapp" can be rearranged to form the word "paperboat."
Romantic is the word.
lisle
Inept
ducat.
discount
The word is angry.
Norwich
tryinsud = industry
dauct
g l i n b s i s:Siblings would be the word for the jumbled letters.
The jumbled word in "Monday" could be "Dynamo." If you meant to ask for an anagram or another rearrangement, please clarify!