back-door
UK[ˌbæk ˈdɔː]US[ˌbæk ˈdɔːr]
adj
Done or achieved in a secret, indirect, or underhanded way.
n
A secret, indirect, or underhanded method of achieving something.
Morpheme Breakdown
back
door
back
rear
door
entrance
Etymology
The term 'back-door' is a native English compound formed from two Old English roots. Literally, it refers to a secondary, often less conspicuous, entrance at the rear of a building. This literal meaning evolved metaphorically to describe any unofficial, covert, or indirect method of entry or achievement, bypassing the normal, 'front-door' procedures. The logic is clear: just as a back door allows discreet access to a place, a 'back-door' method allows one to achieve an objective discreetly, sometimes unethically, avoiding official scrutiny or rules.
Analysis
Structure: back (rear) + door (entrance)
- back: From Old English 'bæc', meaning the rear part of the body or a position behind. In this compound, it signifies something secondary, hidden, or not official.
- door: From Old English 'duru'/'dor', meaning a movable barrier for closing an entrance. In this compound, it metaphorically represents a point of entry or access.
Examples
They used a back-door channel to negotiate the release of the hostages.
The amendment was a back-door attempt to raise taxes without a public vote.
He gained access to the system through a security back-door.