1 author

2 writer

3 classifier: 个 gè

1 tell-tale

2 informer (esp. to police)

3 whistleblower

4 grass

1 ninja

1 patient

2 sufferer

1 or

2 possibly

3 maybe

4 perhaps

1 lit. 之[zhī], 乎[hū], 者[zhě] and 也[yě] (four grammatical particles of Classical Chinese) (idiom); fig. archaic expressions

1 The benevolent sees benevolence, the wise sees wisdom.

2 Different views are admissible. (idiom)

1 to use an opponent's own methods to obtain retribution (idiom, from Song dynasty neo-Confucianist Zhu Xi 朱熹); to get revenge by playing sb back at his own game

2 to give sb a taste of his own medicine

1 He who comes is surely ill-intentioned, no-one well-meaning will come (idiom).

2 Be careful not to trust foreigners.

3 Beware of Greeks bearing gifts!

1 to refuse nobody (idiom)

2 all comers welcome