Dictionary.com
Thesaurus.com

Isaac

American  
[ahy-zuhk] / ˈaɪ zək /

noun

  1. (in the Bible) a son of Abraham and Sarah, and the father of Jacob.

  2. a male given name: from a Hebrew word meaning “laughter.”


Isaac British  
/ ˈaɪzək /

noun

  1. an Old Testament patriarch, the son of Abraham and Sarah and father of Jacob and Esau (Genesis 17; 21–27)

"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

Isaac Cultural  
  1. The son of Abraham and the father of Jacob and Esau.


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.

See Examples For:

She was visited at her hospital bed both by President Isaac Herzog, who holds a largely ceremonial role, and centre-left opposition leader Yair Golan.

From Barron's ● Oct. 19, 2026

Isaac Medeiros, founder of AI-copywriting platform ContentForge, used his Instinct agent to book flights for an upcoming camping trip.

From MarketWatch ● Oct. 8, 2026

Israeli President Isaac Herzog said on Thursday that the alarm was raised onboard by an Israeli woman, Tali Manes, who heard a commotion coming from the cockpit.

From BBC ● Oct. 3, 2026

Find insight on Fair Isaac, Oura and more in the latest Market Talks covering Technology, Media and Telecom.

From The Wall Street Journal ● Sep. 29, 2026

Isaac took this spirit dictation in the form of a letter to himself.

From "American Spirits" by Barb Rosenstock

Random Word

Spin the wheel and learn a new word!

Get a word

Vocabulary.com logo
by dictionary.com

Just like flashcards, but way more fun

Don't take our word for it. Leave the boring studying behind and join VocabTrainer today. You'll learn even faster and never look back.

Take me to Vocabulary.com