refuel
Word family
Synonym discussion
Sense: verb/1
All three expressions describe putting fuel into a vehicle, but they differ in formality and scope. 'Refuel' is the most neutral and widely used across all vehicle types (planes, ships, cars) and in both formal and informal writing. 'Fuel up' is more informal and typically used for cars or personal vehicles, often with a sense of preparing for an activity ('fuel up before a road trip'). 'Fill up' is the most casual and strongly implies filling the tank to full capacity, usually at a petrol station; it is rarely used for aircraft or ships. For example: 'The airline refueled the plane in Dubai.' 'We need to fuel up before the long drive.' 'I filled up at the station down the road.'
Common collocations
Etymology
Formed by adding the prefix 're-' (meaning 'again') to the word 'fuel.' 'Fuel' comes from Old French 'feuaile,' which developed from Latin 'foculus,' meaning 'little fire' or 'hearth.' The verb 'refuel' first appeared in English in the early 1800s, when steamships needed to take on coal during long voyages.