nth vs unfixed

nth

• The item at position n in a sequence. 

• The item in a relatively large but unspecified position in a series. 

• Occurring at a relatively large but unspecified position in a series. 

• Occurring at position n in a sequence. 

unfixed

• Not fixated or fixed; moving or changing freely 

• Not fixed; not corrected. 

• Not fraudulently prearranged.