This is the 14923rd most frequent Russian word.
поддельному
"Fake" or "counterfeit."
Here, 'поддельному' is used as an adjective describing the noun 'документу', indicating that the document is fake or counterfeit.
Я заметил ошибку в поддельному документу.
I noticed an error in the fake document.
In this sentence, 'поддельному' modifies the noun 'подобию', highlighting that the semblance of friendship is not genuine.
Мы не должны доверять поддельному подобию дружбы.
We should not trust the fake semblance of friendship.
Here, 'поддельному' describes the noun 'варианту', emphasizing that the chosen version is not authentic.