un·co (ŭngkō) Scots
So unusual as to be surprising; uncanny.
n. pl. un·cos
1. An unusual or amazing person.
2. A stranger.
3. uncos News.
To an excessive degree; remarkably.
[Middle English unkow, variant of uncouth, strange; see UNCOUTH.]
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.