This is the 14516th most frequent German word.
küssen
"To kiss."
The verb 'küssen' is used here in its infinitive form as part of a modal verb construction to express a desire.
Ich möchte dich küssen.
I want to kiss you.
Here, 'küssen' is conjugated in the past tense (Präteritum), showing an action that happened in the past.
Sie küssten sich auf der Feier.
They kissed each other at the party.
The noun form 'Kuss' derived from 'küssen' is used to describe the act of kissing as a concept.