tr.v. sup·pressed, sup·press·ing, sup·press·es
1. To put an end to forcibly; subdue: suppress a rebellion. See Usage Note at repress.
2. To curtail or prohibit the activities of: suppress dissident groups.
3. To keep from being revealed, published, or circulated: suppress evidence; suppress a film.
a. To deliberately exclude (unacceptable desires or thoughts) from the mind.
b. To inhibit the expression of: suppress anger; suppress a smile.
a. To restrain the growth, activity, or release of: suppress a virus; suppress a hemorrhage.
b. To inhibit the expression of (a gene): suppress a mutation.
[Middle English suppressen, from Latin supprimere, suppress- : sub-, sub- + premere, to press; see per-4 in the Appendix of Indo-European roots.]
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.