Neil deGrasse Tyson holds no thoughts back on Twitter, and Merriam-Webster has had enough.

On Thursday, the astrophysicist decided to tweet a complaint about about the word "awesome," which he is clearly sick of and believes is overused by today's youth.

Merriam-Webster, master of language and throwing shade, was promptly alerted of the tweet, and responded the only way fit.

"In my day, the word 'Awesome' was reserved for things like curing Polio and walking on the Moon, not for food or TV shows," Tyson tweeted, and UGH, dude, could you be slightly less of a grumpy old man nerd, please?

In my day, the word “Awesome" was reserved for things like curing Polio and walking on the Moon, not for food or TV shows. — Neil deGrasse Tyson (@neiltyson) April 13, 2018

After seeing this genius man tweet such a dumb, insufferable, failed attempt at being cool, Merriam-Webster replied with a simple yet suitable burn.

One word: Neil. (WITH a period, to really drive the point of "please stop" home.)

Twitter users rallied behind Merriam-Webster with support, also taking shots at the astrophysicist's tweet.

This may be hard for some to hear but Neil deGrasse Tyson is a chronic mansplainer https://t.co/HRLTnVWyKg — bird law expert (@sikemeay) April 13, 2018

"IN My dAy, thE woRd 'AWeSomE' wAs reSerVED foR thINgS liKe cUriNg PoLiO aND WaLKIng ON tHe MOOn, noT fOR fOOd oR TV shOWs" pic.twitter.com/UmTFn8dy7f — Miriam Kramer (@mirikramer) April 13, 2018

he is literally grandpa simpson pic.twitter.com/4PV0PlPBpK — Sonny Bunch (@SonnyBunch) April 13, 2018

For Neil Degrasse Tyson's future tweets pic.twitter.com/M2dFVUxsBF — Steven Weirich (@rhyme_or_steven) April 13, 2018

neil degrasse tyson tweets exclusively to warn people not to hang out with him https://t.co/JpYWgiCj02 — 𝑹𝒀𝑳𝑨𝑵𝑫 𝑫𝑼𝑵𝑪𝑨𝑵 (@RYLANDDUNCAN) April 13, 2018

Lmao not even @neiltyson is immune from this weird baby boomer word patrol phenomenon. Let people enjoy things, dude! https://t.co/O0UvRGSSL8 — Lindy J. (@el_jensay) April 13, 2018

Dare we say, the responses were "awesome."

It's not the first time Neil has complained about people's use of the A-word.

But maybe he should check himself, because it appears he uses it too. 🙄

Hmmmmm...