Try almost stupid style of architecture (6)
I believe the answer is:
gothic
'style of architecture' is the definition.
(Gothic is an example)
'try almost stupid' is the wordplay.
'try' becomes 'go' (both can mean an attempt).
'almost' means to remove the last letter (almost the whole word is kept).
'stupid' becomes 'thick' (similar in meaning).
'thick' with its last letter taken off is 'thic'.
'go'+'thic'='GOTHIC'
(Other definitions for gothic that I've seen before include "Barbarous" , "Early style of architecture and a literature dealing with mysterious events in eerie settings" , "Old language" , "Architectural style in Europe 12th-16th centuries" , "Style of e.g. Notre-Dame, Chartres" .)