informal

informal (ɪnˈfɔːməl)

—*adj*
1.	not of a formal, official, or stiffly conventional nature: an informal luncheon
2.	appropriate to everyday life or use: informal clothes
3.	denoting or characterized by idiom, vocabulary, etc, appropriate to everyday conversational language rather than to formal written language
4.	denoting a second-person pronoun in some languages used when the addressee is regarded as a friend or social inferior: In French the pronoun "tu" is informal, while "vous" is formal

in'formally

—*adv*

Collins English Dictionary - Complete & Unabridged 10th Edition
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Word Origin & History

informal

1608, "irregular, unofficial," from in- "not" + formal (q.v.). Sense of "done without ceremony" is from 1828.

Example sentences

Against all odds, the informal and under-funded marine park has been heralded

as a success.

Informal working conditions may cause you to rub shoulders with an amorous

partner.

It appeared that he tried to use a rule on followup of informal versus formal

complaints to let it die.

The practicality of such an informal promise is doubtful.

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Matching Quote

"We as a nation need to be reeducated about the necessary and sufficient conditions for making human beings human. We need to be reeducated not as parents—but as workers, neighbors, and friends; and as members of the organizations, committees, boards—and, especially, the informal networks that control our social institutions and thereby determine the conditions of life for our families and their children."

-Urie Bronfenbrenner