1. Having life; living. See Synonyms at living.
2. In existence or operation; active: keep your hopes alive.
3. Full of living or moving things; abounding: a pool alive with trout.
4. Full of activity or animation; lively: a face alive with mischief.
5. Sports In play; live: a foul called when the ball is alive.
Aware of; sensitive to: alive to the moods of others.
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.