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Definitions

informally

[in-fawr-muh-lee] / ɪnˈfɔr mə li /
ADVERB
casually
Synonyms
STRONGEST
carelessly coolly indifferently
WEAK
lackadaisically offhandedly reservedly unconcernedly unemotionally
ADVERB
intimately
Synonyms
STRONGEST
personally
STRONG
well
WEAK
confidentially familiarly lovingly privately secretly
Antonyms
WEAK
openly publicly reservedly
ADVERB
naturally
Synonyms
STRONGEST
commonly consistently easily generally instinctively normally simply spontaneously typically uniformly usually
WEAK
artlessly but of course by birth by nature candidly casually characteristically customarily freely genuinely habitually impulsively innocently openly ordinarily readily unaffectedly unpretentiously
Antonyms
STRONGEST
difficultly unusually
WEAK
affectedly unnaturally

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

A group informally known as "Hulk" lizards has altered the dynamics within the species.

From Science Daily • Apr. 25, 2026

Many were employed informally without any legal contract.

From BBC • Apr. 21, 2026

Altman in early 2025 asked former Twitter CEO Parag Agrawal to informally consult a team inside OpenAI working on making a social-media project similar to X, according to the Journal.

From MarketWatch • Mar. 31, 2026

In this alternate past, a fatal blood virus, known informally as the Red Wind, has been ravaging the population for about a decade.

From Los Angeles Times • Mar. 26, 2026

He kept his promise, although we found he was always teaching us things informally, when our backs were turned.

From "Cheaper by the Dozen" by Frank B. Gilbreth Jr. and Ernestine Gilbreth Carey