inofficial

C2+ Topic:Law & Government

US /ˌɪnəˈfɪʃəl/ UK /ˌɪnəˈfɪʃəl/ See IPA manual

adj

Meanings

1

adj
not official; lacking formal authority (archaic for unofficial)

The talks proceeded on an inofficial footing, with no minutes kept.

Thesaurus

Synonyms

1 adj · not official; lacking... unofficial informal unauthorized

Opposites

official formal authorized

Word family

Derived forms inofficially

Related forms official office unofficial

Etymology

From in- ('not') + official, from Latin officialis ('of an office'), from officium ('duty, service'), from opus ('work') + facere ('to do'). An archaic variant of unofficial.

in- Latin officium Latin

View etymology graph ->

Topics

Law & Government Word Formation & Derivatives Register & Style

# inofficial

**Type:** Word
**Level:** C2+
**Part of speech:** adj
**IPA (US):** ˌɪnəˈfɪʃəl
**IPA (UK):** ˌɪnəˈfɪʃəl

## Meanings
1. not official; lacking formal authority (archaic for unofficial)

## Examples
- The talks proceeded on an inofficial footing, with no minutes kept.

## Synonyms
- unofficial
- informal
- unauthorized

## Antonyms
- official
- formal
- authorized

## Derived Forms
- inofficially

## Related Forms
- official
- office
- unofficial

## Roots and Affixes
- Root: in-
- Root: officium

## Etymology
From in- ('not') + official, from Latin officialis ('of an office'), from officium ('duty, service'), from opus ('work') + facere ('to do'). An archaic variant of unofficial.

## AI Etymology
inofficial comes from in- ('not') + official, from Latin officialis ('of an office'), from officium ('duty, service'), from opus ('work') + facere ('to do'). An archaic variant of unofficial. Morphologically, the prefixed shape matters: the initial element belongs to the recorded formation and helps explain the modern form's surface analysis. In present English, the adjective sense is "not official; lacking formal authority (archaic for unofficial)", so the historical development ends in a clearly identifiable modern dictionary use. The same base also appears in related forms such as official, office, and unofficial, and in derivatives such as inofficially. Its semantic neighborhood includes unofficial, informal, and unauthorized, which helps locate the modern sense without adding a separate etymological claim. The named historical forms include Latin in- and Latin officium.

## Topics
- Law & Government
- Word Formation & Derivatives
- Register & Style

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