Crossword Genius

Lively Spanish port run by old American (8)

Ross

I believe the answer is:

vigorous

'lively' is the definition.
(thesaurus)

'spanish port run by old american' is the wordplay.
'spanish port' becomes 'vigo' (I've seen this before).
'run' becomes 'r' (cricket abbreviation).
'by' says to put letters next to each other.
'old' becomes 'o' (common abbreviation eg in OE for Old English).
'american' becomes 'us'.
'vigo'+'r'+'o'+'us'='VIGOROUS'

(Other definitions for vigorous that I've seen before include "Full of energy and strength", "energetic,strenuous", "Powerful, energetic", "Strong and energetic", "Energetic, forceful".)

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.