single;  simple;  singles (tennis, badminton, etc.);  win bet (bet which predicts the winner of a race)
 pole;  climax;  extreme;  extremity
 child (esp. a boy);  viscount;  founder of a school of thought (esp. Confucius);  master;  masters and philosophers (categorization of Chinese classical literature); (arch.)  you;  -er (i.e. man who spends all his time doing...)