Admission of fault

• Admission of guilt
• Copper interrupting dinner, say, with secretary — it's my fault

Wiktionary Word definitions in Wiktionary
phr. My fault, due to my error; my bad.

Wikipedia Word definitions in Wikipedia
Mea culpa is Latin for "my fault". Mea culpa may also refer to:

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
Latin, literally "I am to blame," a phrase from the prayer of confession in the Latin liturgy.

WordNet Word definitions in WordNet
n. an acknowledgment of your error or guilt