One of the most main is -ful. This would make the word joyful.
the suffix is ABLE.
fully
ful
slowy ,kindy ,mornfully ,hopfully ,joyfully ,lovely etc.
Without the transposition of letters, the word is happily(joyfully, gladly).
The suffix for undo is to not do.
The suffix is -tion. This suffix means the process of.
The suffix for "instruct" is "-ion".
joyfully is an adverb. ly is the usual adverb suffix.
slowy ,kindy ,mornfully ,hopfully ,joyfully ,lovely etc.
more joyfully, most joyfully
More joyfully and most joyfully.
more joyfully, most joyfully
An antonym for joyfully is unhappily.
He jumped joyfully.
Joyfully, he did a little dance.
boring
joyfully
happily joyfully
joy