Last night's episode, "Platonish," wasn't the first to coin a new phrase

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:

The possimpible

Episode: “The Possimpible,” probably the show’s best single-episode contribution of new words

Definition: That which is beyond the impossible, at the place where the possible and the impossible meet. The episode’s focus on business also produced jargon like connectitude, transformatation and linkativity—and…

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.

And then there’s one that wasn’t actually invited by HIMYM — it shows up on Google’s Ngram viewer as early as 1859 — but gets an honorary mention for having become so associated with the show

Lawyered

Episode: several

Definition: What a lawyer says upon winning an argument

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