in·sep·a·ra·ble (ĭn-sĕpər-ə-bəl, -sĕprə-)
1. Impossible to separate or part: inseparable pieces of rock.
2. Very closely associated; constant: inseparable companions.
in·sep′a·ra·bili·ty, in·sepa·ra·ble·ness n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.