Definition of "excommunicable" [ex•com•mu•ni•ca•ble]

• Meriting, liable to, or punishable by excommunication: excommunicable behavior. (adjective)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "My priest tells me that liking the original Battlestar Galactica is an excommunicable offense, but I don't care!"
• "KAYE: The Family International refused an interview with CNN, but in a statement acknowledges Berg taught sexual liberty without instituting safeguards for the protection of minors, but it says, that was corrected in 1986, and any infractions are an excommunicable offense."
• "In fact, the practice of polygamy is an excommunicable offense, and has been for many decades."