Dictionary.com
Thesaurus.com
Synonyms

plethora

American  
[pleth-er-uh] / ˈplɛθ ər ə /

noun

  1. overabundance; excess.

    His crisis brought him a plethora of advice and an almost complete lack of assistance.

  2. a large quantity or wide array; a lot.

    The co-op program offers a plethora of advantages for students.

    Visitors are drawn to the main beach, where a plethora of watersports can be enjoyed.

  3. Pathology Archaic. a morbid condition due to excess of red corpuscles in the blood or increase in the quantity of blood.


plethora British  
/ ˈplɛθərə, plɛˈθɒrɪk /

noun

  1. superfluity or excess; overabundance

  2. obsolete pathol a condition caused by dilation of superficial blood vessels, characterized esp by a reddish face

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • plethoric adjective
  • plethorically adverb

Etymology

Origin of plethora

First recorded in 1535–45; from New Latin, from Greek plēthṓra “fullness,” from plḗthein “to fill, be full”; complete ( def. ), full 1

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Raul's threat came alongside a plethora of Real Madrid number nines, Ronaldo, Ruud van Nistelrooy, Gonzalo Higuain...

From BBC • Mar. 3, 2026

The approach goes hands-in-hand with a burgeoning plethora of behind-the-scene sports documentaries, podcasts and even NFL player-backed fashion tie-ins.

From Barron's • Feb. 3, 2026

That could go beyond a one-page invoice to include a plethora of rows of data to support those payments.

From The Wall Street Journal • Feb. 3, 2026

First, he has transformed the 1.84-acre plot into a veritable oasis with the help of professional arborists who have planted a plethora of exotic trees throughout the front and back yards.

From MarketWatch • Dec. 26, 2025

Studies of ancient skeletons indicate that the transition to agriculture brought about a plethora of ailments, such as slipped discs, arthritis and hernias.

From "Sapiens: A Brief History of Humankind" by Yuval Noah Harari