(re:
|re|
/riː/
(re)
about; concerning
Etymology
're' originates from Latin, specifically the word 'res' (ablative/in + re), where 'res' meant 'thing, matter'.
're' came into English usage via legal and ecclesiastical Latin phrases such as 'in re' (meaning 'in the matter of') and was retained in formal and legal contexts; later it was adopted as an abbreviated marker 'Re:' in correspondence and email subject lines.
Initially it meant 'in the matter of' in Latin usage; over time it has remained 'concerning' in formal contexts and additionally became an email/letter subject marker indicating 'in reply to' or the topic of the message.
Meanings by Part of Speech
Noun 1
the subject-line prefix 'Re:' used in letters and emails meaning 'in reply to' or indicating the topic of the message.
Her email had Re: in the subject, indicating it was a reply to his earlier message.
Synonyms
Adverb 1
in reference to; with respect to — used as an abbreviation in headings or notes.
Please see the attached document re your request.
Synonyms
Preposition 1
regarding; concerning — used to indicate the subject or matter being referred to (formal, legal, or business contexts).
The memo re: budget cuts will be discussed tomorrow.
Synonyms
Antonyms
Idioms
Last updated: 2025/10/25 07:23