cause célèbre /kōz sā-leˈbr’/ (French)

1. A very notable or famous trial
2. A notorious controversy or highly controversial person

• on-driving
• on duty
• -one
• one
• one-acter
• one-acters
• one and all
• one-and-thirty
• one another
• one-armed bandit
• on earth
• one by one
• one day
• one-day
• on edge
• one-dimensional
• one-er
• one-eyed
• one fell swoop
• one flesh
• onefold
• one for his nob
• one for the road
• one-handed
• one-horse