trans·gress (trăns-grĕs, trănz-)
v. trans·gressed, trans·gress·ing, trans·gress·es
1. To go beyond or over (a limit or boundary); exceed or overstep: "to make sure that her characters didn't transgress the parameters of ordinariness" (Ron Rosenbaum).
2. To act in violation of (the law, for example).
1. To commit an offense by violating a law, principle, or duty.
2. To spread over land, especially over the land along a subsiding shoreline. Used of the sea.
[Middle English transgressen, from Old French transgresser, from Latin trānsgredī, trānsgress-, to step across : trāns-, trans- + gradī, to go; see ghredh- in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.