inflection of treffen:
/ inflection of treffen:

inflection of eintreffen:
/ inflection of eintreffen:

(transitive, reflexive) to meet; to encounter / (transitive, intransitive) to hit; to strike / (transitive) to affect; to concern / (intransitive or reflexive, colloquial, often with gut or schlecht) to hit the mark, to suit, to be convenient or fortunate / (transitive, with certain abstract nouns) to cause the action implied by an abstract noun to take place, thus making the sentence passive or less direct; to effect the action

gerund of treffen

a meeting

(idiomatic) to hit the nail on the head

genitive singular of Treffen

hit (A blow, punch, strike hitting a target.)

present participle of treffen

apt, apposite / appropriate