exp.

1. indicates word or phrase being defined
2. used for quoting (thoughts, speech, etc.) (indicates contrast or adds emphasis to a negative statement)
3. with (more emphatic than と)
4. (not) as much as; (not) so much as (with neg. verb)
5. the fact that; to think that; such a thing as (indicates surprise, disbelief, anger, etc.; sometimes at sentence end)