Definition of Informal

1. Adjective. Not formal. "An informal gathering of friends"

2. Adjective. Not officially recognized or controlled. "A loose organization of the local farmers"
Exact synonyms: Loose
Similar to: Unofficial

3. Adjective. Used of spoken and written language.

4. Adjective. Having or fostering a warm or friendly and informal atmosphere. "The small room was cozy and intimate"
Exact synonyms: Cozy, Intimate
Similar to: Friendly
Derivative terms: Coziness, Informality

Definition of Informal

1. a. Not in the regular, usual, or established form; not according to official, conventional, prescribed, or customary forms or rules; irregular; hence, without ceremony; as, an informal writing, proceeding, or visit.

Definition of Informal

1. Adjective. Not formal or ceremonious; casual. ¹

2. Adjective. Not in accord with the usual regulations; unofficial. ¹

3. Adjective. Suited for everyday use. ¹

4. Adjective. (context: of language) Reflecting everyday, non-ceremonious usage. ¹

5. Adjective. (gardening) Not organized; not structured or planned. ¹

¹ Source:

Definition of Informal

1. marked by the absence of formality or ceremony [adj]

Medical Definition of Informal

1. 1. Not in the regular, usual, or established form; not according to official, conventional, prescribed, or customary forms or rules; irregular; hence, without ceremony; as, an informal writting, proceeding, or visit. 2. Deranged in mind; out of one's senses. "These poor informal women." (Shak) Origin: Pref. In- not + formal. Source: Websters Dictionary (01 Mar 1998)

Informal Pictures

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Lexicographical Neighbors of Informal

informal (current term)
informal fallacy
informal logic

Literary usage of Informal

Below you will find example usage of this term as found in modern and/or classical literature:

1. Principles of the English Law of Contract and of Agency in Its Relation to by William Reynell Anson, Ernest Wilson Huffcut (1899)
"The informal promise. Remedies for breach of promise in Brae- ton. in the solemnities of the contract under seal, or in the presence of consideration, ..."

2. Mega-City Growth and the Future by Roland J. Fuchs (1994)
"50 per cent of the urban housing is provided through the informal sector. In Lima, Peru. over 42 per cent of all housing is in informal sector settlements. ..."

3. Principles of Contract at Law and in Equity: A Treatise on the General by Frederick Pollock, Gustavus Henry Wald, Samuel Williston (1906)
"It being established that the informal agreements we are considering are not ... Money paid under an informal agreement cannot be recovered back merely on ..."

4. Principles of Contract: Being a Treatise on the General Principles by Frederick Pollock (1885)
"But the Court held that such a construction would be too unreasonable, and the statute must mean that informal agreements are not to be enforced in any way ..."

5. Principles of the Law of Contract: With a Chapter on the Law of Agency by William Reynell Anson, Arthur Linton Corbin (1919)
"The informal promise. I have said that the only contracts which English law originally recognized, were the formal contract under seal, and the informal ..."

6. Reaching All Families: Creating Family-Friendly Schools edited by Oliver C. Moles (1997)
"These luncheons let parents engage in informal conver- Gatherings sations with the principal and each other and can be organized schoolwide, by grade level, ..."

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