This is the 10639th most frequent Russian word.
возиться
To busy oneself with something in a tedious or detailed manner; to fuss or fiddle.
In this sentence, 'возиться' means to dedicate time and effort to preparing dinner, suggesting meticulous activity.
Мама долго возилась с приготовлением ужина.
Mom spent a long time occupied with cooking dinner.
Here, 'возиться' implies engaging in detailed and perhaps intricate mechanical work with the car.
Он целый час возился с машиной в гараже.
He spent an hour tinkering with the car in the garage.
In this context, 'возиться' expresses being actively and energetically engaged in playful activities, reflecting enjoyment.