galaxy brain

galaxy brain is the alternative form of galaxy-brain.

Meaning of galaxy-brain

galaxy-brain (comparative more galaxy-brain, superlative most galaxy-brain)

(Internet, sarcastic, usually) Appearing to be insightful and profound, but actually absurd, incomprehensible, or nonsensical.
- On the surface, none of this makes sense. Yet it becomes rational once you explore the context—in fact, if you glimpse the bigger picture, the scene crosses the threshold into galaxy-brain logic.2018 September 20, Barry Thompson, “Heavy Leather Topless Dance Party”, in DigBoston, page 12
Synonyms:

galaxy-brained

galaxy brain (plural galaxy brains)

(Internet) Someone who comes up with galaxy-brain (seemingly profound, but actually absurd) ideas.
- Then, at the 11th hour, one galaxy brain says that the way to force the vote through is to make it a vote on not just one of the most unpopular causes in the country—fracking—but the most unpopular cause in the country: the current Prime Minister.2022 October 19, Ed Miliband, “Ban on Fracking for Shale Gas Bill”, in parliamentary debates (House of Commons)

What does galaxy brain mean?: Galaxy brain means someone who comes up with galaxy-brain (seemingly profound, but actually absurd) ideas.
What is galaxy brain the alternative form of?: Galaxy brain is the alternative form of galaxy-brain.
What part of speech is galaxy brain?: Galaxy brain is a noun.
What is the plural of galaxy brain?: The plural of galaxy brain is galaxy brains.

Adapted from Wiktionary: galaxy brain (page history and authors); galaxy-brain (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated: 2026-09-02

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-galaxy brain.wav.

Cite this entry: “galaxy brain.” Word.ws, https://word.ws/galaxy_brain. Based on Wiktionary, CC BY-SA 4.0.