Caution Glaswegian man taken in by an attractive person (8)
I believe the answer is:
admonish
'caution' is the definition.
(synonyms)
'glaswegian man taken in by an attractive person' is the wordplay.
'glaswegian man' becomes 'mon' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'taken in by' indicates putting letters inside.
'an' becomes 'a'.
'attractive person' becomes 'dish' (dish can mean an attractive person).
'a'+'dish'='adish'
'mon' going inside 'adish' is 'ADMONISH'.
Can you help me to learn more?
(Other definitions for admonish that I've seen before include "Warn sternly" , "Firmly reprimand" , "Chide, reprove" , "Scold, wag the finger at" , "Mildly reprove" .)