Find Antonyms

informally Antonyms

Opposite of informally

Because the opposite of informally shifts with each meaning, the antonyms and opposite words below are separated across 2 exact definitions and ranked by contrast strength.
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• adverb (Context 1)

In a relaxed, friendly, or unofficial manner, without strict adherence to ceremony, protocol, or established rules.

Usage Example

"The committee members met formally over lunch to discuss the upcoming budget proposal."

Strongest
formally
officially
Strong
ceremoniously
strictly

• adverb (Context 2)

In everyday conversational speech or familiar language rather than formal or technical usage.

Usage Example

"The plant is scientifically classified under the genus Bellis, though it is formally known as the common daisy."

Strongest
formally
Strong
technically
officially

Similar words to informally

Words similar to informally shift depending on context. Common synonyms include:

casually
colloquially
unofficially
conversationally
off the record
vernacularly
unceremoniously
popularly
See all synonyms of informally

• Nearby Words

inform
informal
informality
informally
information
informational
informative

Cite this Entry

Wordmom. (2026). Antonyms for Informally. In Wordmom Thesaurus. Retrieved Nov 5, 2026, from https://wordmom.com/antonyms/informally
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