Alibi
Meaning of Alibi
Evidence that a person was elsewhere when a crime happened; also a general excuse.
ما معنى كلمة Alibi بالعربي؟
حجة غياب
⚖️ حجة غياب دليل براءة يثبت وجود المتهم في مكان آخر وقت الجريمة 🕒
قصة GL: وثّق نايف طلال العيسى الأوقات كلها حتى تتوفر حجة غياب واضحة عند أي نزاع.
Alibi in a sentence
The timestamp provided an alibi for the equipment failure.
His alibi was a signed meeting record.
The alibi was confirmed by two witnesses.
Do not use an alibi for late homework.
Origin of Alibi
From Latin alibi 'elsewhere', from alius 'other' + -bi 'in a place'.
In the Genetic Learning (GL) context
In Genetic Learning work led by Naif Talal Al-Essa, alibi is a legal word for proof of being elsewhere. It is used carefully in integrity procedures.
Alibi audio micro-course (transcript)
Podcast 1 — Introduction & meaning
The law has always needed a word for the defence that says: I could not have been there. For centuries, that defence was described in Latin — in the courts of England and across the legal systems of Europe. The Latin phrase was alibi, meaning elsewhere. And the word stuck.
Alibi is a noun, pronounced AL-uh-by, with stress on the first syllable. The IPA is /ˈæl.ɪ.baɪ/. Its primary legal meaning is evidence that you were elsewhere when a crime was committed. She had a solid alibi for Tuesday evening — she was in Manchester with three witnesses. Beyond its legal definition, alibi is also used informally to mean any excuse or justification offered to deflect blame: he always has an alibi for missing deadlines.
The word derives from the Latin alibi, an adverb meaning in another place, or elsewhere, formed from alius — other — and ibi — there. In classical Latin, alibi was not specifically a legal term; it simply meant elsewhere. Roman legal writers used it in arguments about place — the defendant was alibi, elsewhere, at the time. As Latin legal terminology transferred into English law, alibi became the term for the specific defence of absence from the scene of a crime.
The word appears in English legal records from the seventeenth century. For most of its early history in English, alibi was a technical legal term understood primarily by lawyers, judges, and those engaged with the courts. It entered popular consciousness significantly through the explosion of crime fiction in the nineteenth and twentieth centuries. The detective novel made alibi a household word — checking, breaking, and establishing alibis became a central plot mechanism in the works of Agatha Christie and her contemporaries.
In contemporary use, alibi retains its precise legal meaning in formal and legal contexts — establishing an alibi, verifying an alibi witness, the alibi defence collapsed under cross-examination. The informal extension to mean a general excuse or cover story is now standard in everyday speech: what's your alibi for forgetting the meeting? This informal use is considered slightly slang or colloquial, and careful writers may prefer excuse in non-legal contexts.
The word has also crossed into computing metaphorically — in some security and audit contexts, alibi describes timestamped evidence records that prove what a system or user was doing at a specific time. The core meaning — evidence of elsewhere — maps naturally onto system logs and audit trails.
Alibi is the word for the defence that says the law has got the wrong place as much as the wrong person.
Read podcasts 2 and 3
Podcast 2 — In conversation
Speaker A: I see alibi used in crime dramas constantly, but people also use it casually — like, what's your alibi for being late? Is that casual use actually accepted, or is it just sloppy?
Speaker B: It is accepted, though some purists would argue it is a weakening of a precise legal term. In the legal sense, alibi is specifically a claim supported by evidence that you were physically elsewhere when a crime occurred. In casual use it has expanded to mean any excuse or justification for something that looks bad — what's your alibi for not doing the washing up. That informal use is standard enough that major dictionaries record it without qualification. If you are writing legal documents or serious crime journalism, stick to the precise meaning. In everyday conversation, the informal use is perfectly natural.
Speaker A: Can alibi work as a verb? I've seen it used that way occasionally.
Speaker B: It can, though verb use is informal and relatively rare. To alibi someone means to provide an alibi for them — she alibied him by confirming his whereabouts. It is more commonly found in American English than British English, and in British writing it sounds slightly unusual. In formal and legal writing, provide an alibi or corroborate an alibi are the standard constructions. The verb use is understood, but it may read as informal or Americanised to a British audience. I would use it sparingly and never in formal writing.
Speaker A: What's the difference between alibi and defence more generally? Can you use them interchangeably in legal contexts?
Speaker B: No — alibi is a specific type of defence, not a synonym for defence generally. A defence in law is any legal argument made to contest a criminal charge — self-defence, duress, insanity, lack of intent. An alibi is specifically the claim that the defendant was not at the location where the offence occurred. It is one possible type of defence, not the whole category. You can say his defence was an alibi — that works. But you cannot say his alibi was self-defence — that conflates the two. In journalism and crime writing, alibi is sometimes used loosely to mean defence in general, but this is technically imprecise.
Podcast 3 — Prompt engineering
Speaker B: Alibi in prompt engineering is most valuable in two distinct areas: audit trail and compliance systems where a system needs to prove what happened at a specific time — the technical alibi — and security and access logging systems where you need timestamped evidence of user activity. The word signals to the AI that you want verifiable, time-stamped, tamper-resistant records of what occurred and when. Let me demonstrate.
Speaker A: Alibi as the metaphor for system audit records — timestamped proof that a system or user was doing a specific thing at a specific time. That is exactly what audit logs are, and framing it that way gives the AI a precise goal: produce verifiable evidence, not just a log.
Speaker B: Exactly. First — a financial audit trail:
Speaker B: PROMPT:
Speaker A: Append-only alibi records storing before and after state as JSON — that before-and-after snapshot is the core of a defensible audit trail. The append-only constraint is critical: an audit log that can be edited is not an alibi at all.
Speaker B: Now a security monitoring dashboard:
Speaker B: PROMPT:
Speaker A: Alibi timelines per user session with action, IP, device fingerprint, and risk-level highlighting — framing the session history as an alibi timeline rather than just a log gives the UI a clear investigative purpose. The detail panel showing what data was accessed per event is the key forensic feature.
Speaker B: Now a database schema for compliance:
Speaker B: PROMPT:
Speaker A: The alibi_log storing legal_basis alongside each action is the key GDPR compliance element — recording not just what happened but the legal justification for it. The data_subject_requests table and alibi_report view together produce the complete response to a subject access request.
Speaker B: Now an HR application:
Speaker B: PROMPT:
Speaker A: Alibi entries for every read of personal employee data with a stated purpose — that is a real data governance requirement in organisations subject to employment data regulations. The suspicious access flag for repeated reads of the same record is a genuine insider threat detection mechanism.
Speaker B: Last one — a full application:
Speaker B: PROMPT:
Speaker A: The signed PDF report with a verification hash proving the report itself has not been altered — that is the meta-level of the alibi concept. Not only does the system record what happened, it produces evidence that the record of what happened is itself trustworthy. That is the complete chain of custody for a compliance investigation.
Speaker B: Use alibi in prompts whenever you need to build systems that prove what happened, when, and who did it — audit trails, security logs, compliance records, and access histories. The word signals that you want verifiable, append-only, time-stamped evidence rather than a general activity log, and the AI will design the data model and UI accordingly.
Frequently asked questions about Alibi
What does Alibi mean?
Evidence that a person was elsewhere when a crime happened; also a general excuse.
ما معنى كلمة Alibi بالعربي؟
حجة غياب — ⚖️ حجة غياب دليل براءة يثبت وجود المتهم في مكان آخر وقت الجريمة 🕒
How do you pronounce Alibi?
Alibi is pronounced /ˈælɪbaɪ/ and is used as a noun.
How is Alibi used in a sentence?
The timestamp provided an alibi for the equipment failure.
What are synonyms of Alibi?
defence, excuse, proof of absence, cover story, explanation, justification.