Set.
Successfully is a 12 letter word with three set of double letters. Stubbornness is another 12 letter word.
set
Creed. (Also, a five letter word for a set of beliefs beginning with "d" is dogma).
ertdf
Freed.
no one knows
Set free
ignite
ransom
determined
Put or set
A code.
Set.
Emancipate.
Successfully is a 12 letter word with three set of double letters. Stubbornness is another 12 letter word.
it means to set free