Letch used in a sentence

Letch in a sentence as a noun

He's learned you can letch on your step-daughter from the age of 12 and **** her the day she turns 17, and get away with it, if you're rich and famous.

The CEO is a letch, a literal dirty old man. During my time there, he was known for constantly seeking the opinion of a particular staff member.

I think I would expect a priori that some TSA agents would be trying to do a good job and some would just be in it to letch on passengers. The question is how prevalent the later is compared to the former, and why the TSA isn't trying to distinguish them themselves.

I imagine much of the public muttering "Trump's a letch, the Democrat higher-ups and parts of the media have a love-in, and politicians think of the public as a mixture of easily-led minions and ignoramuses. Yup, we'd pretty much guessed that already&;&."