Mass noun referring to things that remain unspoken.
They shared a look, the unsaid hanging heavily between them.
Они обменялись взглядами, и невысказанное тяжело повисло между ними.
Used attributively and predicatively to describe something that has not been spoken or expressed.
Her support was unsaid but understood.
Её поддержка была несказанной, но понятной.
There was an unsaid agreement between them.
Между ними было невысказанное соглашение.
‘Unsaid’ functions adjectivally in modern English to mean ‘not spoken or retracted’.