The phrasal verb "buckle up" is primarily used in informal contexts, most commonly in American English, though it is understood in other English-speaking regions. It refers to the act of fastening a seatbelt in a vehicle, emphasizing safety before driving or during a flight. The usage of "buckle up" is prevalent in both spoken language, such as by drivers, pilots, or safety officials urging passengers, and written contexts, like in safety instructions or guidelines. Metaphorically, it can also imply preparing oneself for a challenging or turbulent situation, which can appear in both informal advice and more creative or metaphorical writing. While "buckle up" does carry a sense of urgency or anticipation, it is less likely to be found in formal writing compared to its literal informational context or its use in cooperative settings, such as safety campaigns or casual advisories.
B2
UpperIntermediate
1. To fasten a seatbelt in a vehicle.
Before the car started moving, she made sure to buckle up.
The flight attendant reminded everyone to buckle up as they prepared for takeoff.
2. To prepare or brace oneself for something difficult or challenging.
It's going to be a long meeting, so buckle up.
The coach told the team to buckle up for the intense training session ahead.