insatiate (adjective)

1. Tom and Jerry is an insatiate chase, where Tom can never satisfy his hunger for catching Jerry.

2. The insatiate demand for luxurious penthouses in the city has led to the creation of stunning skyscrapers.

3. Why was the math book sad? Because it had an insatiate appetite for problems, but no solutions!

4. In the comic strip, the superhero's insatiate thirst for justice drives him to fight crime day and night.