元となった辞書の項目
のだ
phrase
an assertion that emphasizes the cause, reasons, grounds and etc. / determination of the speaker; request to the listener to take a certain action / explain something's look and state exclamatorily
意味（1）
an assertion that emphasizes the cause, reasons, grounds and etc.
意味（2）
determination of the speaker; request to the listener to take a certain action
意味（3）
explain something's look and state exclamatorily
意味（4）
an intention to ask for the listener's intention or the facts
