Sprightly, making westward part of journey in southern sea (7)
I believe the answer is:
ageless
'sprightly' is the definition.
Both the definition and answer are adjectives. Maybe they are linked in a way I don't understand?
'westward part of journey in southern sea' is the wordplay.
'westward' says the letters should be written backwards.
'part of journey' becomes 'leg' (leg can mean a stage of a journey).
'in' indicates putting letters inside.
'southern' becomes 's' (abbreviation).
's'+'sea'='ssea'
'leg' put within 'ssea' is 'sselega'.
'sselega' backwards is 'AGELESS'.
'making' acts as a link.
Can you help me to learn more?
(Other definitions for ageless that I've seen before include "Ever youthful" , "Eternal - like Peter Pan" , "not appearing to get old" , "Forever young" , "Staying young" .)