Synonyms of addenda

addenda

noun

variants also addendums

plural of addendum

1

as in appendixes

a part added at the end of a book or periodical

there's an addendum from the author to explain certain stylistic choices that she made

Synonyms & Similar Words

• appendixes
• codicils
• supplements
• additions
• epilogues
• conclusions
• afterwords
• excursuses
• postscripts
• documentations
• codas
• sequels
• endings
• postludes
• accompaniments
• finales
• complements
• riders
• follow-ups
• allonges

Antonyms & Near Antonyms

• introductions
• prefaces
• prologues
• forewords

2

as in additions

something added (as by growth)

with each new addendum the list of demands simply got more absurd

Synonyms & Similar Words

• additions
• increases
• gains
• boosts
• increments
• accruals
• raises
• supplements
• accretions
• augmentations
• pluses
• expansions
• rises
• proliferations
• more
• accumulations
• upticks
• step-ups
• continuations
• appendixes
• extensions
• collections
• gatherings
• spikes
• assemblages
• accessions
• complements
• jumps
• upturns
• uptrends
• run-ups

Antonyms & Near Antonyms

• reductions
• abatements
• losses
• diminutions
• decreases
• depletions
• decrements
• declines
• falls
• shrinkages
• deductions
• subtractions
• step-downs
• diminishments
• drop-offs
• falloffs

Example Sentences

Recent Examples of addenda

During discussions about elementary and middle school social studies curriculum, board members made addendums, including education about the horrors of communism, why the Second Amendment was created and how counterculture increased the rate of divorce. — Rachel Royster, Fort Worth Star-Telegram, 27 June 2026

The lease addendums are a mandatory part of rental agreements across Arizona and the nation. — AZCentral.com, 4 Feb. 2026

The show is light on tech, but the accompanying images (video design by Stefano DeCarli) pour through as addendums to Felder’s puissant passion of Liszt’s Liebesträume or Beethoven’s Für Elise and land with great effect. — David John Chávez, Mercury News, 30 Jan. 2026

Matariyeh’s lawyer William Walker had submitted Norgaard addendums to Mataryieh’s guilty pleas in August. — Dale Morin, Twin Cities, 26 Nov. 2025

Before signing a lease agreement or any lease addendums, take time to carefully read through the terms. — Tamia Fowlkes, jsonline.com, 20 Oct. 2025