v. tweaked, tweak·ing, tweaks
1. To pinch, pluck, or twist sharply: tweaked her sister's ear.
2. To adjust; fine-tune: tweaked her computer setup.
3. To make fun of; tease.
1. To behave in an agitated or compulsive manner, especially when under the influence of a stimulant drug.
2. To be under the influence of a stimulant drug, especially methamphetamine.
1. A sharp, twisting pinch.
2. A small adjustment: made a few tweaks to the sound system.
3. A teasing remark or action; a joke.
[Probably variant of dialectal twick, from Middle English twikken, from Old English twiccian.]
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.