잠자는 동안 꾸는 무섭거나 불쾌한 꿈.
A frightening or unpleasant dream.
예문:
"She woke up screaming after having a vivid nightmare about falling from a tall building."
"If you are troubled with nightmares, try to reduce stress before bedtime."
끔찍하거나 다루기 매우 어려운 경험, 상황, 또는 골칫거리.
A terrifying, very unpleasant, or extremely difficult experience, situation, or person to deal with.
예문:
"The long process of renovating the old house turned into a bureaucratic nightmare."
"For the IT team, the sudden server crash was a complete nightmare that lasted all weekend."
"Trying to assemble this complicated furniture without instructions is an absolute nightmare."