false-flag
/fɒls/ /flaɡ/
noun
1 A flag flown to disguise the true identity or affiliation of a ship.
2 usually as modifier A political or military act orchestrated in such a way that it appears to have been carried out by a party that is not in fact responsible.
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Bob fooled absolutely nobody when he threw a false-flag into the illustration of vexillology which was the word offered by the dictionary today.