fuel2 past tense and past participle fuelled, present participle fuelling British English, past tense and past participle fueled, present participle fueling American English
to make something, especially something bad, increase or become stronger:
His words fuelled her anger still more.
fuel speculation/rumours/controversy etc
Progress was slow, fueling concerns that the stadium would not be finished on time.
2 also fuel up [intransitive and transitive]
if you fuel a vehicle or if it fuels up, fuel is put into it:
We'd better fuel up at the next town.
The van was fuelled and waiting in the basement car park.