plead guilty (?.)

• acknowledge
• admit
• admit everything
• allow
• apologize
• avow
• beg pardon
• come clean
• concede
• confess
• cop a plea
• do penance
• grant
• let on
• open up
• out with it
• own
• own up
• reform
• repent
• spill
• spill it
• spit it out
• tell all
• tell the truth
• think better of