Crossword Genius

Is Mardy Bum to make tens of thousands? (7)

Ross

I believe the answer is:

myriads

'tens of thousands?' is the definition.
(I've seen this in another clue)

'is mardy bum' is the wordplay.
'bum' is an anagram indicator (bum can mean faulty or wrong).
'is'+'mardy'='ismardy'
'ismardy' with letters rearranged gives 'MYRIADS'.

'to make' is the link.

(Another definition for myriads that I've seen is " huge numbers".)

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