Sci-fi author Asimov

The answer

ISAAC

5 letters. See every clue for this answer on the ISAAC answer page.

Used 18 times across 13 distinct years; most recently in 2026; first recorded in 1999. It appears in 11 publications in the xd corpus. Frequency and last-seen figures come from the xd crossword corpus only.

Other clues for ISAAC

Every other clue in this collection answered by ISAAC, most used first.

• Sir __ Newton - used 104 times, most recently in 2026
• Violinist Stern - used 66 times, most recently in 2026
• Author Asimov - used 55 times, most recently in 2026
• Stern with a bow - used 51 times, most recently in 2026
• Writer Asimov - used 43 times, most recently in 2024
• Designer Mizrahi - used 37 times, most recently in 2025
• "I, Robot" author Asimov - used 34 times, most recently in 2026
• Abraham's son - used 29 times, most recently in 2022
• Son of Abraham - used 29 times, most recently in 2025
• Scientist Newton - used 22 times, most recently in 2026
• "The Love Boat" bartender - used 21 times, most recently in 2026
• Son of Sarah - used 19 times, most recently in 2016
• Biblical patriarch - used 17 times, most recently in 2024
• Esau's father - used 17 times, most recently in 2024
• Physicist Newton - used 17 times, most recently in 2026
• "Shaft" composer Hayes - used 17 times, most recently in 2024
• Newton - used 16 times, most recently in 1977
• Soul singer Hayes - used 16 times, most recently in 2026
• Sci-fi writer Asimov - used 14 times, most recently in 2026
• Newton or Stern - used 13 times, most recently in 2016
• Father of Jacob - used 12 times, most recently in 2022
• Singer Hayes - used 12 times, most recently in 2026
• Asimov of sci-fi - used 11 times, most recently in 2018
• Newton or Hayes - used 11 times, most recently in 2025
• Asimov or Newton - used 10 times, most recently in 2023
• Bartender on "The Love Boat" - used 9 times, most recently in 2023
• Mathematician Newton - used 9 times, most recently in 2010
• Newton of physics - used 9 times, most recently in 2026
• Asimov or Stern - used 8 times, most recently in 2011
• Funk of Funk & Wagnalls - used 8 times, most recently in 2019
• Hayes of "South Park" - used 8 times, most recently in 2008
• Jacob's father - used 8 times, most recently in 2025
• "Shaft" singer Hayes - used 8 times, most recently in 2026
• Bartender on TV's Pacific Princess - used 7 times, most recently in 2024
• Father of Esau and Jacob - used 7 times, most recently in 2019
• Hayes or Stern - used 7 times, most recently in 2022
• Newton with laws - used 7 times, most recently in 2016
• Sarah's son - used 7 times, most recently in 2022
• Biblical father of twins - used 6 times, most recently in 2019
• Fashion designer Mizrahi - used 6 times, most recently in 2026
• "I, Robot" writer Asimov - used 6 times, most recently in 2026
• Ishmael's half-brother - used 6 times, most recently in 2007
• Old Testament patriarch - used 6 times, most recently in 2022

Related clues

Clues in this collection of the same answer length that share a word with this clue, or match its answer pattern when no word is shared. Most used first.

• Author Jong - ERICA, used 196 times
• Author Calvino - ITALO, used 151 times
• Author Zola - EMILE, used 131 times
• "Steppenwolf" author - HESSE, used 95 times
• "Siddhartha" author - HESSE, used 90 times
• "Fear of Flying" author Jong - ERICA, used 73 times

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