adj. shak·i·er, shak·i·est
1. Trembling or quivering; tremulous: a shaky voice.
2. Lacking soundness or sturdiness, as of construction: a shaky table.
a. Not to be depended on; precarious: a shaky alliance.
b. Wavering in firmness: a shaky belief.
c. Open to question or doubt: shaky evidence.
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.