Join iLoop users around the world who have learned that there is only one question left to ask: What will they do with all their free time now? Join iLoop users around the world who have learned that there is only one question left to ask:
1794, literally something added, from Latin addendum, neuter of addendus that which is to be added, gerundive of addere (see add (v.)). Classical plural form is addenda.
Determining Your Ability to Create an Addendum. 1  1. Understand the purpose of an addendum. An addendum is an addition to an already agreed upon contract. 2  2. Contact a qualified lawyer. Whether you are a landlord or tenant, you should always get legal advice before changing the terms of an existing lease.