köken: From Byzantine Greek τυχαίνω (tukhaínō), from Ancient Greek τυγχάνω (tunkhánō), from Proto-Hellenic *tunkʰanō, from Proto-Indo-European *dʰewgʰ-.
to collide (with), crash (into), run into, impact · to burst (into), to barge (into); to rush (into) (to enter or exit, or to move, abruptly or clumsily) · to bump into, run into, stumble upon, chance upon, come upon, come across (to encounter by chance)
çekim: geçmiş törmännyt · şimdiki törmää · ulaç törmäävä
köken: törmä + -tä, probably originally in the sense of "to hit/collide into a (river)bank". Alternatively fronted from tormata.