This is the 5185th most frequent Russian word.
неожиданные
Unexpected.
This usage of the word 'неожиданные' describes unforeseen or surprising difficulties, emphasizing their unexpected nature.
Мы столкнулись с неожиданными трудностями.
We encountered unexpected difficulties.
Here, 'неожиданные' describes guests who arrived without prior notice or expectation.
У нас были некоторые неожиданные гости вчера вечером.
We had some unexpected guests last night.
In this case, 'неожиданным' is used to characterize results that were surprising or not anticipated.