Definition of "nemesis" [nem•e•sis]

• A source of harm or ruin: Uncritical trust is my nemesis. (noun)
• Retributive justice in its execution or outcome: To follow the proposed course of action is to invite nemesis. (noun)
• An opponent that cannot be beaten or overcome. (noun)
• One that inflicts retribution or vengeance. (noun)
• Greek Mythology The goddess of retributive justice or vengeance. (noun)

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.

• "So, how can scientology claim to be a religion if their nemesis is their god."
• "This compelling legal drama welcomes veterans of stage and screen to the guest roster this week, including Tony winner Anika Noni Rose (the Dreamgirls movie, The No. 1 Ladies Detective Agency) as a lawyer in nemesis Glenn Childs 'office as Alicia gets caught up in a multi-million dollar malicious prosecution case."
• "And everyone knows that Garland is the evil nemesis from the first Final Fantasy."