-다고

Entry 1 · ending

1. 1A connective ending referring to the purpose or intention of a certain action, or the reason or cause of a certain situation.
2. 2A connective ending used to indicate that the preceding statement is a quotation from a proverb.

Entry 2 · ending

1. 1(informal addressee-lowering) A sentence-final ending used to emphatically state the speaker's thoughts or argument to the listener.
2. 2(informal addressee-lowering) A sentence-final ending used to ask again about a fact that one heard and confirm it.
3. 3(informal addressee-lowering) A sentence-final ending used to say something in such a way that one confirms and realizes that a certain fact is different from one's prediction.

Entry 3

1. 1An expression used to pass along what the speaker heard from another person, or to present the subject's thoughts, opinions, etc.