1. letter
2. mail
3. to trust
4. to believe
5. to profess faith in
6. truthful
7. confidence
8. trust
9. at will
10. at random

classifier: 封

1. brushstroke; stroke (in painting or calligraphy)
2. (bound form) style of writing; literary manner; technique of brushwork
3. (classifier) stroke of a Chinese character
4. (classifier) sum of money; financial transaction; piece of business
5. (literary) to write (with a brush or pen)

classifiers: 支, 枝