To meet or find someone, often by chance, at a particular place. It is a somewhat more formal variant of 'treffen' (to meet).
example
Ich habe ihn gestern beim Einkaufen im Supermarkt angetroffen.
I found him yesterday while shopping at the supermarket.
Usage tips
Separable verb
'Antreffen' (to find / to encounter) is a separable verb. The prefix 'an-' is placed at the end of the sentence in a main clause.
EXAMPLE
Die Polizei traf den Zeugen zu Hause an.
The police found the witness at home.
Register: formal
This verb is more formal than the everyday word 'treffen' (to meet). It is often used in reports, official notices, or written language.
EXAMPLE
Man trifft ihn selten ohne seinen Hut an.
You rarely find him without his hat.
Typical constructions
In the meaning of 'vorkommen' (to occur) or 'existieren' (to exist), 'antreffen' (to be found) is very often used in the passive or in the form 'sein + zu + infinitive'. These constructions emphasize the presence of a thing in a place.
EXAMPLE
Diese Bedingungen werden nur in der Tiefsee angetroffen.
These conditions are found only in the deep sea.
Compare with
near_synonym · confusable
antreffen vs finden
to find
'finden' and 'antreffen' can both mean that you discover someone or something at a place. 'finden' is more general: you can find a key, find a person, or discover something by chance. 'antreffen' is used especially when someone is at a particular place, for example at home or in the office. It sounds somewhat more formal. Learners may confuse the words because both have to do with discovering or finding. As a simple guide: for everyday objects, 'finden' is usually more natural; for people at a place, 'antreffen' often fits well.
antreffen
Beim Arzt trifft Mara die Ärztin nicht an, weil sie gerade im Notfallzimmer ist.
At the doctor's office, Mara does not find the doctor there because she is in the emergency room.
finden
Nach langem Suchen findet Frau Lange die Unterlagen für die Prüfung.
After a long search, Mrs. Lange finds the documents for the exam.