You could add the suffixes ful- and -ing to it to make the words wonderful and wondering.
Wondered
Wonder
Wonders
The suffix of "wonderful" is "-ful".
No, "ful" is a suffix in the word "wonderful" that means "full of." It is used to make an adjective that describes something as being full of wonder or inspiring wonder.
The suffix -ful in "wonderful" means full of or characterized by. In this case, it indicates that something is full of wonder or causing wonder.
ful
tile is not a suffix, ile is. it means ability to, capable of, suitable for, like, belonging to... go forth and do wonderful things.
As far as I know, "bar" is not a suffix in English. However, "bar" is a suffix in German, and it means "bearing" (roughly). A prominent example is "wunderbar" = "bearing wonders" = "wonderful".
In a wonderful or surprising manner or degree; wonderfully., Wonderful; astonishing; admirable; marvelous; such as excite surprise and astonishment; strange.
It's not a prefix
Neglectful combines "neglect" with the suffix "-ful".
The suffix of "undoing" is "-ing."
The suffix of "moon" is "-oon".
The suffix is -er, meaning "one who campaigns."