Furious article on golf railway (5)
I believe the answer is:
angry
'furious' is the definition.
(synonyms)
'article on golf railway' is the wordplay.
'article' becomes 'an' (indefinite article).
'on' says to put letters next to each other.
'golf' becomes 'g' (phonetic alphabet: alpha, bravo, charlie etc.).
'railway' becomes 'ry' (abbreviation).
'an'+'g'+'ry'='ANGRY'
(Other definitions for angry that I've seen before include "Inflamed" , "Furious" , "Irate, mad" , "Upset" , "Cross" .)