adj. shag·gi·er, shag·gi·est
1. Having, covered with, or resembling long rough hair or wool.
2. Bushy or matted: shaggy hair.
3. Having a rough nap or surface, as a textile.
4. Poorly groomed; unkempt.
5. Marked by a lack of order or clarity in thinking, planning, or performance.
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.