Invert

11 clues
Flip
Flop
Upend
Overturn
Turn over
Turn inside out.
Turn upside-down
Turn back to front
Reverse (the position of)
Put the cart before the horse, say
Change, as a fraction to its reciprocal
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Abettertomorrow
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Acertaincommon
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Actinginconcert
Adamlambert
Addinginventory
Adjustdesserts
Advert
Advertentmistake
Adverting
Advertise
Advertisement
Advertises