backdoor

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A form of back door — A subsidiary entrance to a building or house at its rear, normally away from the street.

Similar
back doorback entrance
OriginEnglish door ← Middle English dore ← Old English duru →
Less commonScrabble 17
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Meanings

nounbackdoor (plural backdoors)

plural backdoors

  1. alternativeAlternative form of back door.

    South Western Railway is introducing "backdoor price hikes" of "up to 28%" from September 5, claims pressure group SWR Watch, which has asked the operator: "When were you going to tell passengers?"

    2021 September 8, “Network News: SWR accused of "backdoor price hikes"”, in RAIL, number 939, page 12
verbbackdoor (third-person singular simple present backdoors, present participle backdooring, simple past and past participle backdoored)

present singular third person backdoors · participle present backdooring · participle past backdoored · past backdoored

  1. alternativeAlternative spelling of back door.

Synonyms & antonyms

nounan undocumented way to get access to a computer system or the data it contains

Similar
back door
Broader
accessaccess code

nounan entrance at the rear of a building

Similar
back doorback entrance
Broader
exterior dooroutside door

nouna secret or underhand means of access (to a place or a position)

Similar
back door
Broader
access
Also see
back doortradesman's entranceunderhand

Synonym sets from Open English WordNet, CC BY 4.0.

Origin

  1. Proto-Indo-European*bʰeg-der.?
  2. Proto-Germanic*baką
  3. Proto-West Germanic*bak
  4. Old Englishbæc
  5. Middle Englishbak
  6. Englishback
  7. Proto-Indo-European*dʰwer-
  8. Proto-Germanic*durz
  9. Proto-West Germanic*dur
  10. Old Englishduru
  11. Middle Englishdore
  12. Englishdoor
  13. Englishbackdoor

From back + door.

Full word history & related roots →

Rhymes & wordplay

Anagrams

bookcard
Cite this entry
APA

backdoor. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/backdoor

MLA

“backdoor.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/backdoor. Accessed November 2, 2026.

Chicago

WatkinsX Dictionary, s.v. “backdoor,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/backdoor.

Source: backdoor on Wiktionary, CC BY-SA 4.0.