19 down
Blue
Ivy
Carter
initially
supports
Beyonce’s
latest
nonsense
(6)
Blue Ivy Carter initially supports Beyonce’s latest nonsense (6)
hints
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checks
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hints
The definition is at the beginning of the clue.
How the clue works
Right, so blue is the definition here — meaning risqué, or erotic. For the wordplay, take E, which is the latest letter of "Beyonce", stick ROT (nonsense) onto it, then tack IC on the end, taken from the initial letters of "Ivy Carter" supporting the rest. Bung it all together and you get EROTIC.