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Isaac

proper nouncommon in dialogue

  • Australia//ˈaɪzæk//
  • //ˈaɪzək//

The son of Abraham and Sarah, father of Esau and Jacob, from whom the Hebrew people trace their descent.

proper noun

  1. 1

    The son of Abraham and Sarah, father of Esau and Jacob, from whom the Hebrew people trace their descent.

    And Abraham circumciſed his ſonne Iſaac, being eight dayes old, as God had commanded him.

  2. 2

    A male given name from Hebrew.

  3. 3

    A surname originating as a patronymic.

  4. 4

    A local government area in central Queensland, Australia, named after the Isaac River; in full, Isaac Region.

Etymology

From Middle English Ysaac, from Latin Isaac, from Ancient Greek Ἰσαάκ (Isaák), from Hebrew יצחק (Yiṣḥāq, literally “he laughs, he will laugh”). Explained in Genesis as referring to his mother Sarah’s laughing when she was told she would have a son at her old age. The verb is masculine, however, perhaps due to its use as a boy’s name.

Forms

plural
Isaacs
The neighbouring pagesAlphabetical order follows the rules of the language, not byte values: an accent decides only between two otherwise identical words, and Spanish files Ñ as a letter of its own.

Lexical content from Wiktionary, under CC BY-SA 4.0 · Source entry · Data version 2026-08-23

Rank among the words of the OpenSubtitles 2018 corpus — film and television subtitles, so spoken rather than written usage (CC BY-SA 3.0).