Dictionary.com
Thesaurus.com
Synonyms

bullfrog

American  
[bool-frog, -frawg] / ˈbʊlˌfrɒg, -ˌfrɔg /

noun

bullfrogs plural
  1. a large frog, especially the North American Rana catesbeiana, having a deep voice.


bullfrog British  
/ ˈbʊlˌfrɒɡ /

noun

  1. any of various large frogs, such as Rana catesbeiana ( American bullfrog ), having a loud deep croak

"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

Noun Inflected Forms

Etymology

Origin of bullfrog

1690–1700, bull 1 + frog 1; so called from its size and voice

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.

Researchers reviewed existing scientific literature, examined museum specimens from around the world, analyzed fungal genetics from Brazilian bullfrog farms, and studied bullfrogs sold internationally.

From Science Daily • Jan. 19, 2026

"I sing like a bullfrog," he once told record producer Fred Foster.

From BBC • Sep. 30, 2024

The pangram from yesterday’s Spelling Bee was bullfrog.

From New York Times • Mar. 20, 2023

A bullfrog and a corgi puppy in a field of daffodils look toward the painted boy acrobat who hangs upside down from his rings, surrounded by butterflies and bumblebees.

From Los Angeles Times • Nov. 14, 2022

From across the river, a big old bullfrog started drumming away—brro-o-m, brro-o-m.

From "Summer of the Monkeys" by Wilson Rawls

Vocabulary.com logo
by dictionary.com

Look it up. Learn it forever.

Remember "bullfrog" for good with VocabTrainer. Expand your vocabulary effortlessly with personalized learning tools that adapt to your goals.

Take me to Vocabulary.com