This is the 6423rd most frequent French word.
hop
An informal exclamation meaning "there," "up," or used to express a quick action or movement.
The word 'hop' is used as an interjection here to mark a moment of action or movement, similar to 'let's go' or 'here we go' in English.
Hop, on y va !
Here we go!
'Hop' describes the action of a small jump or leap in this sentence.
Elle a sauté par-dessus le ruisseau d'un petit hop.
She jumped over the stream with a small hop.
Here, 'hop' is used colloquially to mark a sudden or unexpected occurrence, carrying a tone of surprise or inevitability.