tr.v. in·vig·or·at·ed, in·vig·or·at·ing, in·vig·or·ates
To impart vigor, strength, or vitality to; animate: "A few whiffs of the raw, strong scent of phlox invigorated her" (D.H. Lawrence).
[Possibly obsolete invigor (from French envigorer, from Old French envigourer : en-, in; see IN-2 + vigour, vigor; see VIGOR) + -ATE1.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 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.