Stumped on a Crossword? Crack the Clue: First-time Offense

Stumped on a Crossword? Crack the Clue: First-time Offense - STRIKEONE
First-time offense, so to speak

Initial violation
Opening misdeed
First infraction
Debut wrongdoing
Premiere misdemeanor
Maiden transgression
Commencing fault
Introductory offense
Starting foul
First mistake
Primary breach

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