The continental one certainly taking plenty of time (9)

I believe the answer is:

leisurely

I'm a little stuck... Click here to teach me more about this clue!

'plenty of time' is the definition.
Both the answer and definition are adverbs. Perhaps there's a link between them I don't understand?

'the continental one certainly' is the wordplay.
'the continental' becomes 'le'.
'one' becomes 'I' (Roman numeral).
'certainly' becomes 'surely' (synonyms).
'le'+'i'+'surely'='LEISURELY'

'taking' acts as a link.

Can you help me to learn more?

(Other definitions for leisurely that I've seen before include "Not forced" , "Sue Reilly for being relaxed" , "Slow" , "Unhurried, taking one's time" , "Laid-back" .)

I've seen this clue in The Telegraph.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.