11 Terms Invented by How I Met Your Mother

You won’t find the title of last night’s episode of How I Met Your Mother in the dictionary — but the doesn’t mean it’s not a specific word for a specific thing. The neologism, Platonish, perfectly sums up that not-quite-platonic relationship status…a status that, if you ask Barney, is true of every single male-female pair of friends who are both single (with one exception).

But platonish isn’t the sitcom’s first foray into the land of the lexicon. The show has a long history of coining words, phrases and concepts. Many of the larger, recurring concepts — the Slap Bet, the Vicky Mendoza Diagonal and the hot/crazy scale, the Bro Code… — have successfully infiltrated pop culture, but the writers also have a knack for turning a smaller phrase and coining new words. Like:

Insanulous
Episode: “The Possimpible”
Definition: Insane + ridiculous. (Various spellings accepted.)

Revertigo
Episode: “Sandcastles In The Sand”
Definition: The change that happens to someone’s personality when he or she spends time with someone from his or her past.

Awsful
Episode: “Benefits”
Definition: Awesome + awful; a good way to disguise accidental jubilation.

Desperation Day
Episode: “Desperation Day”
Definition:  Feb. 13, the last day to find someone with whom to spend Valentine’s Day

(MORE: Please Do Not Make a How I Met Your Mother Spinoff)

Woo Girls
Episode: “Woooo!”
Definition: Single women who go out in large groups and yell “wooo!” a lot—even when nothing is actually exciting them

Steak sauce
Episode: “Life Among the Gorillas”
Definition:  A-1, the tops, the best, awesome.

Superdate
Episode: “Of Course”
Definition: One date that includes “17 dates-worth of romance”

DoWiSeTrePla
Episode: “Dowisetrepla”
Definition: A play on the naming of many New York City neighborhoods, this locale is Downwind of the Sewage Treatment Plant.

(MORE: How I Met Your Mother Is Doing An All-Rhyming Episode)