sinnlos Englisch:

These senseless killings will not go unpunished.

The whole nation is shocked by the senseless murder committed with unthinkable savagery.

The sentence is senseless, but correct.

Even if your sentences were actually senseless, you at least have the luck to be able to form beautiful sentences.

War results only in senseless and violent destruction.

Religion, which should most distinguish us from the beasts, and ought most particularly elevate us, as rational creatures, above brutes, is that wherein men often appear most irrational, and more senseless than beasts.

It's senseless to worry about doing it.