murk

"The fog obscured the view of the mountaintop, making it impossible to see. "

"We usually have family dinner in the afternoon. "

"The thick fog obscured the distant buildings, making it hard to see them. "

"The noisy environment of the school cafeteria made it difficult to concentrate on my homework. "

"The darkness of the room made it difficult to see."

"He threatened me with a knife."

"He was hoping that we would take him seriously."

"Quality of life is usually determined by health, education, and income."

"The glass clouds when you breathe on it."

"The impossible of finishing the project by Friday became a reality when everyone worked late. "

"The complicated instructions on the new software difficult me from completing the project on time. "

"The cat was sleeping on the couch, but when I came back, it had disappeared. "