Back door or backdoor?
back door is a noun meaning “A subsidiary entrance to a building or house at its rear, normally away from…”; backdoor is a noun meaning “Alternative form of back door”. back door is written as two words and backdoor as one word; they are used differently.
What is the difference between back door and backdoor?
| back door | backdoor | |
|---|---|---|
| Part of speech | noun, adjective, verb | noun, verb |
| Meaning | A subsidiary entrance to a building or house at its rear, normally away from the street A means of access, often secret and unprotected, to something USThe path of a pitch which starts outside and then slides over the plate | Alternative form of back door Alternative spelling of back door |
| Example | backdoor action | none recorded |
| Forms | back-doors | backdoors |
| Pronunciation | not recorded | not recorded |
| In writing | not counted (the list counts single words) | 1.1 times per million words |
Sources: back door and backdoor 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 back door and backdoor
back door
- 1
A subsidiary entrance to a building or house at its rear, normally away from the street
- 2
USThe path of a pitch which starts outside and then slides over the plate
He has a nasty back door slider
- 3
To attempt to accomplish by indirect means, especially when direct means are proscribed
- 4
Alternative form of back door
- 5
A means of access, often secret and unprotected, to something
- 6
Achieved through indirect means
Lately there's been a lot of back door pressure on me to step down
- 7
To enter a tube by accelerating from behind; to surf into an already formed hollow wave, in contrast to the normal method of slowing to allow a surfable wave to form
- 8
A secret means of access to a program or system
backdoor
- 1
Alternative form of back door
- 2
Alternative spelling of back door
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, back door or backdoor?
back door is a phrase, which the list of single words does not count; backdoor 1.1 times per 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 back door vs backdoor?
“back door vs backdoor” is searched about 50 times a month on Google and 10 on Bing in the United States. Google counts close variants of a query together (“backdoor vs back door”, “back door or backdoor”).
Sources: Google Ads keyword data through DataForSEO and Microsoft Advertising keyword data through DataForSEO, the average month from September 2025 to August 2026.