Idiot's late checking French and German articles on hotel (10)
I believe the answer is:
dunderhead
'idiot's' is the definition.
(I've seen this before)
'late checking french and german articles on hotel' is the wordplay.
I cannot really see how this works, but
'late' could be 'd' and 'd' is found in the answer.
'and' could be 'n' (common abbreviation for 'and') and 'n' is located in the answer.
'german' could be 'de' (language code) and 'de' is located in the answer.
'hotel' could be 'h' (phonetic alphabet: alpha, bravo, charlie etc.) and 'h' is located in the answer.
'on' could be 're' ('on' can be mean 'with reference to') and 're' is found in the leftover letters.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for dunderhead that I've seen before include "Dunce" , "dumbass?" , "fool" , "Stupid person" , "Ignoramus" .)