Pop up or popup?
pop up is an adjective meaning “Coming into view suddenly from a concealed position”; popup is a noun meaning “Alternative form of pop-up”. pop up is written as two words and popup as one word; they are used differently.
What is the difference between pop up and popup?
| pop up | popup | |
|---|---|---|
| Part of speech | adjective, noun, verb | noun |
| Meaning | Coming into view suddenly from a concealed position Opening out to form a three-dimensional structure when the page of a book is opened A pop-up advertisement; an advertisement that is triggered to appear on a computer screen when the user accesses a particular web page | Alternative form of pop-up |
| Example | I packed a pop-up hamper in my suitcase | none recorded |
| Forms | none | popups |
| Pronunciation | /ˈpɒpʌp/ | not recorded |
| In writing | not counted (the list counts single words) | about once in every 2 million words |
Sources: pop up and popup in the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
Every current meaning of pop up and popup
pop up
- 1
Coming into view suddenly from a concealed position
I packed a pop-up hamper in my suitcase
- 2
A pop-up advertisement; an advertisement that is triggered to appear on a computer screen when the user accesses a particular web page
- 3
To come up with a "pop" sound
The toast is in the toaster - when it pops up it will be ready
- 4
Opening out to form a three-dimensional structure when the page of a book is opened
- 5
A pop-up ball: a ball that has been hit to a considerable height above the infield or the shallow outfield; a pop fly
- 6
informalTo appear without warning
I can't remember where I left my keys, but they normally pop up somewhere
- 7
Operating or existing for a brief period only; temporary
- 8
A folded paper element which pops up from a book, greeting card, etc
popup
- 1
Alternative form of pop-up
Source: the English Wiktionary, dump of September 2, 2026 (CC BY-SA 4.0); obsolete, archaic, dialect and rare senses left out.
Which is more common, pop up or popup?
pop up is a phrase, which the list of single words does not count; popup about once in every 2 million words.
Source: written frequency: wordfreq 3.1 (a 2021 snapshot of Wikipedia, subtitles, news, books, web text and social media).
How many people search pop up vs popup?
“pop up vs popup” is searched about 10 times a month on Google and 10 on Bing in the United States. Google counts close variants of a query together (“popup vs pop up”, “pop up or popup”).
Sources: Google Ads keyword data through DataForSEO and Microsoft Advertising keyword data through DataForSEO, the average month from September 2025 to August 2026.