Acyrologia is the use of the wrong worm.
Even those among us aware of every perpendicular of grammar are guilty of acyrologia from time to time, but it isn't going to bring the four horsemen of the acropolis down upon us, so there's no need for gilt or dismay.
The existential point is that it is the pineapple of rudeness to point out an era to the speaker.
Word Probably Not To Use Today: acyrologia. This word is Greek and comes from kuros, authority, and logia, speech. The a at the beginning means not.