SECAI Core · phase 6 of 15 · noun

Explainability

An AI principle of the extent to which stakeholders can understand the reasoning behind a system's output

The Explain card

Plain English
Explainability is the degree to which stakeholders can understand the reasoning behind a system's output: why this decision, based on which inputs and factors.
Example
A loan model declines an applicant. An explainable system reports that income-to-debt ratio and short credit history drove the decision; an opaque one just says no. The first can be checked and challenged, the second cannot.
Why it matters
If you cannot explain an output, you cannot tell a correct decision from a manipulated or biased one. Explainability supports debugging, regulatory review, and spotting when an attacker has nudged the model.
Hook
Explainability is the model showing its working, not just the answer.

Word knowledge

How the word is built, where it came from, and what it sits beside in memory.

In a sentence

A credit-risk auditor requires explainability, so the scoring service writes a SHAP waterfall for every declined application into the case file.

How it is built
  • ex- prefix out
  • plain root flat, clear
  • -ability suffix capacity; quality of being
Where it came from
Origin
English noun from explainable plus -ity; explain from Latin explanare, to make level or clear, from ex, out, plus planus, flat, with the spelling of English plain
Entered the language
1880s
What changed
Latin explanare meant to flatten a surface until it was level. English explain, from the early 1400s, used that flattening for making speech clear. Explainable is attested around 1600. The noun in -ability is a late-Victorian abstract; from the 2010s, machine-learning papers applied it to models that return feature attributions with a score.
How it is spelled
Pattern
-able adjectives form nouns in -ability
Pattern
Verbs in -ain keep ai through the noun: explainability, sustainability, maintainability
Breaks the pattern
explanation drops the i of explain and writes plan from Latin planus; explainability keeps the English verb's ai

Spelled like

  • sustainability
  • maintainability
  • attainability
Broken into chunks
  • ex
    • export
    • extract
    • exclude
  • plain
    • complain
    • plainly
    • plain
  • ability
    • reliability
    • availability
    • capability
What it sits beside

Same subject

Same shape

Responsible AI principles

Explain family

  • explain
  • explanation
  • explanatory

-ability nouns from -ain verbs

Where it sits in the deck

Phase 6: Model Quality, Ethics, and Responsible AI Principles

Before deploying a model, understand the quality and ethical dimensions — bias, fairness, explainability, and the human oversight needed to govern outputs responsibly.

Neighbours in this phase