Isaac
Americannoun
-
(in the Bible) a son of Abraham and Sarah, and the father of Jacob.
-
a male given name: from a Hebrew word meaning “laughter.”
noun
Discover More
Abraham was prepared to sacrifice Isaac at God's request. (See Abraham and Isaac.)
Compare meaning
How does isaac compare to similar and commonly confused words? Explore the most common comparisons:
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.
Pogacar's Mexican team-mate Isaac del Toro remains third and in the white young riders' classification leader's jersey - nine minutes 42 seconds down.
From BBC ● Jul. 24, 2026
Assisted by his Team UAE colleague Isaac del Toro, Pogacar attacked with more than 25 miles to go, the kind of stunt you don’t pull unless you’re supremely confident.
From The Wall Street Journal ● Jul. 10, 2026
"Beef," a Netflix anthology, stars Oscar Isaac and Carey Mulligan in its second iteration, which focuses on the explosive dynamic between two couples.
From Barron's ● Jul. 8, 2026
That distinction belongs to Miguel Ponce and Isaac Brizuela, who were both born in California and part of the 2014 squad.
From Los Angeles Times ● Jun. 30, 2026
“What happened after I so elegantly passed out? Oh, Isaac will never let me live it down.”
From "The Way to Rio Luna" by Zoraida Cordova
![]()
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.