informal etymology

English word informal comes from English formal, English in-

Detailed word origin of informal

Dictionary entryLanguageDefinition
formal English (eng) (programming) A formal parameter.. (uncountable) Formalin.. An evening gown.. An event with a formal dress code. (mathematics) Relating to mere manipulation and construction of strings of symbols, without regard to their meaning.. Being in accord with established forms.. Ceremonial or traditional.. Official.. Organized; well-structured and planned.. Proper, according to strict etiquette; not [...]
in- English (eng) In, into (non-productive) Added to adjectives to mean not. (non-productive) Added to nouns to mean lacking or without. (non-productive) Used with certain words to reverse their meaning In, into, towards, within.
informal English (eng) (gardening) Not organized; not structured or planned.. (of language) Reflecting everyday, non-ceremonious usage.. Not formal or ceremonious.. Not in accord with the usual regulations.. Suited for everyday use.

Words with the same origin as informal

Descendants of in-
immoral impound inappropriate inaudible incapable incomprehensible indispensable inexperienced informed inhuman inland insecure insensitive insignificant inspector invalid invaluable irrelevant irresistible irresponsible