1. Triple: "treble reason for loving as well as working while it is day" (George Eliot).
2. Music Relating to or having the highest part, voice, or range.
3. High-pitched; shrill.
a. The highest part, voice, instrument, or range.
b. A singer or player that performs this part.
2. A high, shrill sound or voice.
tr. & intr.v. treb·led, treb·ling, treb·les
To make or become triple.
[Middle English, from Old French, from Medieval Latin triplum, from Latin, neuter of triplus, triple; see TRIPLE.]
trebly (trĕblē) adv.
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.