To speak or write in an angry, indignant, or wrathful manner. Fans of the singer have been waxing angry online about the announcement that her new album would be pulled from store shelves due to the recent controversy. You can wax angry all you like, Tom, but it's not going to change the board's decision.
wax angryand wax wroth
Fig. to speak in anger and with indignity. Seeing the damage done by the careless children caused the preacher to wax wroth at their parents.