Crossword Genius

Get rid of most stupid president (4)

Ross

I believe the answer is:

dump

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'get rid' is the definition.
I can't tell whether this definition defines the answer.

'of most stupid president' is the wordplay.
'of most' means to remove the last letter (I've seen 'most' mean this).
'stupid' becomes 'dumb' (similar in meaning).
'president' becomes 'p' (common abbreviation eg in VP).
'dumb' with its last letter taken away is 'dum'.
'dum'+'p'='DUMP'

Can you help me to learn more?

(Other definitions for dump that I've seen before include "Rubbishy place" , "waste ground?" , "Site for rubbish" , "Get rid of" , "Place where rubbish is deposited" .)

I've seen this clue in The Hindu.
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