Profoundly dull family extremely upset to relocate (7)

I believe the answer is:

stupefy

I'm a little stuck... Click here to teach me more about this clue!

'profoundly dull' is the definition.
'stupefy' can be an answer for 'dull' (thesaurus). I'm unsure of the 'profoundly' bit.

'family extremely upset to relocate' is the wordplay.
'extremely' means to remove the middle letters (only the extremes of the word are used).
'to relocate' indicates anagramming the letters (I've seen 'relocated' mean this).
'family' with its middle removed is 'fy'.
'fy'+'upset'='fyupset'
'fyupset' with letters rearranged gives 'STUPEFY'.

Can you help me to learn more?

(Other definitions for stupefy that I've seen before include "Stun" , "Astonish, shock" , "Knock out" , "Dumbfound" , "Astound" .)

I've seen this clue in The Times.

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