I am grateful to Trump for one thing: mainstreaming ‘gaslighting’ | Emma Brockes

It's the word of the year, according to one dictionary publisher, and after 84 years it deserves its spot in the limelight

Of all the words that have, over the last few years, entered mainstream usage to describe the malevolence of others, by far the most powerful is the term gaslighting. I use it a lot, and find myself thinking each time that this is what it must have been like when the term sexism" took off in the late 1960s, giving shape to an amorphous sense of unease latterly denied. As with other, relatively new descriptors - primarily toxic" and boundaries" - accusations of gaslighting are a quick and effective way to end any discussion, since denial of gaslighting is the primary signifier of gaslighting. Set and match!

Credit where it's due: we have Donald Trump to thank for this state of affairs, and such is his hubris it would be entirely in keeping with the man to claim as victory the fact that a term popularised to describe his appalling behaviour was this week unveiled by Merriam-Webster, the dictionary publisher, as its word of the year. It was Trump's ability to deny, with absolute certainty and total indignation, something he had moments earlier said or done that pushed a marginal term invented in 1938 fully into the mainstream. Now it is available to all of us to use and enjoy.

Emma Brockes is a Guardian columnist