1. to be (followed by substantives only)
2. correct; right; true
3. (respectful acknowledgement of a command) very well
4. (adverb for emphatic assertion)

1. one
2. single
3. a (article)
4. as soon as
5. entire; whole; all; throughout
6. "one" radical in Chinese characters (Kangxi radical 1)
7. also pr. yāo for greater clarity when spelling out numbers digit by digit

classifier: 顆