1. prefix used before the surname of a person or a numeral indicating the order of birth of the children in a family or to indicate affection or familiarity
2. old (of people)
3. venerable (person)
4. experienced
5. of long standing
6. always
7. all the time
8. of the past
9. very
10. outdated
11. (of meat etc) tough

1. question
2. problem
3. issue
4. topic

classifier: 個