Decorous meeting in Kent? (6)

I believe the answer is:

sedate

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'decorous' is the definition.
(I've seen this before)

'meeting in kent?' is the wordplay.
'meeting' is a charade indicator (letters next to each other).
'in' becomes 'date' (I can't justify this - if you can you should believe this answer much more).
'kent?' becomes 'se'.
'date' after 'se' is 'SEDATE'.

Can you help me to learn more?

(Other definitions for sedate that I've seen before include "Staid and sober" , "boring" , "grave" , "Calm, not flighty" , "Administer a calming drug" .)

I've seen this clue in The Telegraph.

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