Worthless Word for the Day

[teapeebubbles]

the worthless word for the day is: enantiodromia

the changing of something into its opposite

here's an article proposing that words which
have developed diametrically opposed meanings
be referred to as enantiodromic [this interesting
article seems to be no longer available online,
probably due to the publication of Julain Burnside's
Wordwatching]

I have long sought a word to describe this
phenomenon; unfortunately this one doesn't cover
the special case where two different words with
opposite meanings have come to have the same
spelling -- cleave is an example of this.