that which is to be ...ed
An addendum is an additional section added to the end of a book, document, or speech that gives more information.
A referendum is a proposed measure or other concern that is brought before the people for a vote.
A stupendous event or accomplishment is amazing, astonishing, or simply spectacular.
Someone or something that is legendary is well-known but also not real, such as a hero or monster from mythology.
Something tremendous is very big, really strong, huge, amazing, or excellent.
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