Possible Clues:

• English prose tricky for worker to get into? This is trickier!
• 'I love you' is 'Mi amas vin' in it
• Tongue poor person ate
• One's part is ruined by English language
• Unusually neat prose naturally spoken by no children
• Was enough for augmenting particularly English language
• It has just 16 rules of grammar
• Person ate horrible artificial tongue
• Lingua franca raised by Lazarus
• Artificial means of communicating a spiritual talent by Muse without name