it is assuredly (that)...; can say with confidence that it is...see also なのだ
Forms
なのであるFrequency rank: 3,892. – 3,896.
Generated definitions (experimental)
it is assuredly (that)...; can say with confidence that it is...
This phrase is often used to express certainty or a strong belief about a situation, indicating that the speaker is confident in what they are stating.