1 excellent quality

1 character

2 intrinsic quality (of a person)

3 quality (of a product or service, or as in "quality of life", "air quality" etc)

1 envelope

2 outer shell

3 hull

4 cover

5 case

1 essence

2 nature

3 innate character

4 intrinsic quality

1 shell

2 carapace

3 crust (earth's crust etc)

4 also pr. [ké]

1 to fix a price based on quality (idiom)

1 lit. the heart of a sheep in the skin of a tiger (idiom)

2 fig. impressive in appearance but lacking in substance

3 braggart

1 to degenerate (morally) (idiom)

2 to become depraved

1 lit. the cicada sheds its carapace (idiom); fig. to vanish leaving an empty shell

2 a crafty escape plan