im·mo·bile (ĭ-mōbəl, -bēl′, -bīl′)
1. Immovable; fixed: an immobile rock formation.
2. Not moving; motionless: The patient in the coma was immobile.
3. Not very mobile or agile; capable of moving only slowly: an immobile quarterback.
im′mo·bili·ty (-bĭlĭ-tē) n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2020 by Houghton Mifflin Harcourt Publishing Company. 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.