Betrefft
Betrefft is a historical or nonstandard spelling associated with the German verb betreffen, which means to concern, affect, or pertain. In contemporary standard German, the form betrefft is considered obsolete or incorrect; the correct present tense forms are betreffen (infinitive), er betrifft (3rd person singular), and related forms such as ich betreffe and du betriffst. The spelling betrefft may appear in older texts or regional dialect writings, but it is not used in modern formal language.
The verb betreffen derives from the prefix be- added to treffen (to meet or to hit), yielding
Betreffen is used with a thing or issue as the subject that concerns others. Typical constructions include:
Betreff is a noun meaning the subject or topic of a letter, often used in the heading
Today, betreffen’s standard forms are preferred, and betrefft is generally treated as obsolete. The distinction between