To legally cross the border of a country in order to stay there. This typically happens at official border crossings with passport control.
example
Als EU-Bürger kann man ohne Visum in die meisten europäischen Länder einreisen.
As an EU citizen, you can enter most European countries without a visa.
Usage tips
Perfect tense with 'sein'
Since 'einreisen' (to enter a country) describes movement across a border, the perfect tense is formed with the auxiliary verb 'sein'. A common mistake is using 'haben'.
EXAMPLE
Sie ist gestern ohne Probleme in die Schweiz eingereist.
She entered Switzerland yesterday without any problems.
Separable verb
'Einreisen' (to enter a country) is a separable verb. The prefix 'ein-' is separated from the verb in a main clause and placed at the end of the sentence.
EXAMPLE
Der Tourist reist mit einem gültigen Visum ein.
The tourist enters the country with a valid visa.
Correct preposition
Movement into a country is expressed with the preposition 'in' and the accusative. You enter a country or a region.
EXAMPLE
Um in die USA einzureisen, benötigen viele Menschen ein Visum.
To enter the USA, many people need a visa.
Typical context
The word is almost always used in the official context of border control. It often appears together with words like 'Pass' (passport), 'Visum' (visa), 'Grenze' (border), or 'Zoll' (customs).
EXAMPLE
An der Grenze müssen Sie Ihren Pass vorzeigen, um einreisen zu dürfen.
At the border, you must show your passport in order to be allowed to enter the country.
Compare with
near_synonym · confusable
einreisen vs reisen
to travel
'reisen' and 'einreisen' both have to do with going from one place to another. 'reisen' is general: you travel or fly over a longer distance, for example on vacation or to a business meeting. 'einreisen' is more specific and means entering a country, usually across a border and often with passport control. Learners may confuse the words because both can occur on a trip abroad. You 'reisen' to Italy, but you 'einreisen' into Italy when you cross the border into Italy.
einreisen
An der Grenze mussten alle Passagiere ihren Pass zeigen, bevor sie einreisen durften.
At the border, all passengers had to show their passports before they were allowed to enter the country.
reisen
Im Sommer reisen wir mit dem Zug nach Spanien.
In the summer, we are traveling to Spain by train.