verb
to enter, to occur / to arise, to join (an organisation)
B1
eintreten is a separable strong verb meaning to enter, to occur/arise, or to join (an organisation). Auxiliary: sein (Perfekt: ist eingetreten). Irregular stem changes (e→i; Präteritum trat ein). Often used with in + accusative for joining/entering (in eine Partei eintreten). Non‑reflexive.
Examples
Er wird gleich ins Zimmer eintreten.
He will enter the room any moment.
Sie ist in den Verein eingetreten.
She joined the club.
Der Student trat in den Verein ein, obwohl er anfangs skeptisch war.
The student joined the club even though he was initially skeptical.
Details
Mnemonics
Picture a door with the prefix 'ein-' pushing inward as someone steps through the threshold.
Sounds like English 'enter' — both mean to go in.
Notes
Eintreten is separable (ein|treten) when meaning 'enter' or 'join'. It uses 'sein' as the auxiliary in perfect tenses (ist eingetreten). It is a strong verb with vowel changes in some forms (tritt). Passive (Vorgangspassiv) forms are generally not applicable because the verb is intransitive in its core meanings (no direct object to become subject of a passive).