sup·press 
(sə-prĕs)
(sə-prĕs)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.
4.
a. To deliberately exclude (unacceptable desires or thoughts) from the mind.
b. To inhibit the expression of: suppress anger; suppress a smile.
5.
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.]
sup·pressant n.
sup·pressi·ble adj.