This is the 6190th most frequent German word.
denk
"Denk" is the imperative form of "denken," meaning "think."
In this sentence, "denke" is used to indicate the act of thinking, opinion forming.
Ich denke, du bist müde.
I think you are tired.
Here, "denk" is used as an imperative form of the verb, used to instruct someone to remember or think about something.
Denk daran, die Tür zu schließen.
Remember to close the door.
In this context, "denken" is used to mean the process of reasoning or mental activity.