“Hangout” is an informal noun for a place or online space where people spend time. “Hang out” is the two-word phrasal verb meaning to spend time in a place or with people. The grammatical role determines the word boundary.
ReviewedEvidence2 sourcesSectionEnglish Usage
Quick answer
Use “hangout” as a noun for a place or online space where people spend time; use “hang out” as the phrasal verb for spending time somewhere or with someone.
Key details
Confusion Familyword-boundary
Rule Familyorthographic-boundary
Termshangout, hang out
Choose the right form
Decision table for Hangout vs. Hang Out
If you mean / need
Use
Why
a place or online space people frequent
hangout
It is the noun.
spending time somewhere or with someone
hang out
It is the phrasal verb.
Further guidance
Core difference
“Hangout” names a place or space; “hang out” expresses the activity.
Fast Test
If you can say “hung out” or “hanging out,” use two words.
Register Boundary
Both Cambridge entries mark these uses as informal, so the issue is word class and spacing rather than formality alone.
Sources and evidence
Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.
Standard English writes “a lot” as two words for a large amount, number, frequency, or degree. “Alot” is a common misspelling in this sense; it should not be confused with the separate verb “allot.”
“Blackout” is the closed noun, while “black out” is the two-word phrasal verb. The verb can describe losing consciousness or obscuring/darkening something; the noun names the resulting event or state.
“Blowout” is a closed noun for several events or results, and Cambridge also records “blow-out” as a noun variant. “Blow out” is the two-word phrasal verb, including the sense of extinguishing a flame.
“Breakout” is a closed noun for an escape and an adjective in several established senses. Cambridge also documents “break-out” in modifier use. “Break out” is the two-word phrasal verb for meanings such as beginning suddenly or escaping.
“Breakthrough” is a closed noun for an important discovery or advance and can also modify a following noun. “Break through” is the two-word phrasal verb for forcing or moving through a barrier or threshold.
“Build up” is the two-word phrasal verb. For the noun, Cambridge records hyphenated “build-up,” while its American dictionary also records closed “buildup.” The noun spelling therefore has a documented regional/style variant rather than one universal form.
