The word 'lech' implies negative judgment and is not a compliment. During the meeting, his behavior towards her was that of a lech.
Pro Tip 2/3
Informal Usage
'Lech' is informal and can be rude, so it's not suitable for polite or professional conversations. In a friendly chat, someone might say: 'I wouldn't trust that lech with my sister!'
Pro Tip 3/3
Gender Specific
Traditionally used to refer to men, though the concept can apply to any gender. That old movie portrays him as a charming hero, but he's really just a lech.