01 n. The state of being informal; lack of regular, prescribed, or customary form; as, the informality of legal proceedings.
pl.
Informalities
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1.
The state of being informal; lack of regular, prescribed, or customary form; as, the informality of legal proceedings.
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2.
An informal, unconventional, or unofficial act or proceeding; something which is not in proper or prescribed form or does not conform to the established rule.