maturus
mature
"Mature", meaning developed or complete. The prefix "pre" means before, and the "ly" suffix makes it an adverb.
Prematurely is a real word I think.
early
Prematurely
Fugitive has no root word it is the root word.
During the performance, the drummer began his riff prematurely, drowning out the final bars of the harp solo.
That is the proper spelling of the word "prematurely" (early, ahead of schedule).
There is no root word of river. It itself is a root word.
the root word is'confirminglyishness'
Root word is usual.
the root word is decor and that is the root word of decorate