tr.v., -filed, -fil·ing, -files.
- To make filthy or dirty; pollute: defile a river with sewage.
- To debase the pureness or excellence of; corrupt: a country landscape that was defiled by urban sprawl.
- To profane or sully (a reputation, for example).
- To make unclean or unfit for ceremonial use; desecrate: defile a temple.
- To violate the chastity of.
[Middle English defilen, alteration (influenced by filen, to befoul , from Old English fȳlan) of defoulen, to trample on, abuse, pollute, from Old French defouler, to trample, full cloth : de-, de- + fouler, to trample, beat down; see full2.]
defilement de·file'ment n.defiler de·fil'er n.
defilingly de·fil'ing·ly adv.
The American Heritage® Dictionary of the English Language, Fourth Edition Copyright © 2007, 2000 by Houghton Mifflin Company. Updated in 2009. Published by Houghton Mifflin Company. All rights reserved.