Where the French are about to be unwell? (5)
I believe the answer is:
lille
'where' is the definition.
The definition suggests a singular noun which matches the answer.
'the french are about to be unwell?' is the wordplay.
'the french' becomes 'le' ('the' in French).
'are about' indicates putting letters inside.
'to be unwell?' becomes 'ill' ('ill' can be similar in meaning to 'unwell').
'le' placed around 'ill' is 'LILLE'.
Can you help me to learn more?
(Other definitions for lille that I've seen before include "Stop before Paris" , "City of northern France, close to Belgium" , "[FRANCOPHOBIA] would prevent you appreciating it" , "City of N. France" , "City in northern France, Flanders" .)