Amazed, was worried about European lorry (9)
I believe the answer is:
awestruck
'amazed' is the definition.
(thesaurus)
'was worried about european lorry' is the wordplay.
'worried' is an anagram indicator (worry can mean to interfere with or disturb).
'about' is an insertion indicator.
'european' becomes 'E' (abbreviation e.g. EU).
'lorry' becomes 'truck' (I've seen this before).
'was' anagrammed gives 'aws'.
'aws' going around 'e' is 'awes'.
'awes'+'truck'='AWESTRUCK'
(Other definitions for awestruck that I've seen before include "Lost for words" , "Intimidated" , "Stunned" , "Fearful" , "full of admiration" .)