The phrasal verb "double up" is predominantly used in informal speech, though it can occasionally appear in formal contexts, particularly in writing where a conversational tone is appropriate. Generally, "double up" is used to describe situations where something is increased twofold or when people or things pair up, often out of necessity or efficiency. Common usage patterns include referring to people sharing a space or resource, such as "We had to double up in the hotel room," or in reaction to a stimulus, as in "He doubled up with laughter." In sports or dietary contexts, it might refer to increasing effort or consumption, like "He doubled up on his workouts." Though not highly formal, it conveys adaptability and the concept of managing with limited resources or maximizing utility, making it versatile across various everyday scenarios.
B2
UpperIntermediate
1. To bend or fold over suddenly, often due to pain or laughter.
She doubled up with laughter after hearing the joke.
He doubled up in pain after being hit in the stomach.
2. To share something with someone else, especially space or resources, often due to a lack of availability.
During the trip, we had to double up in hotel rooms because there weren't enough available.
The students doubled up on textbooks because there were not enough copies.