One crossing the line Crossword Clue

 The answer to the crossword clue "one crossing the line" is TRESPASSER. It is a noun that means "someone who enters or goes onto someone else's property without permission". It can also be used as a verb, meaning "to enter or go onto someone else's property without permission".

The word "trespasser" comes from the Latin word "transpassus", which means "to cross over". In the context of a crossword puzzle, the clue "one crossing the line" is likely referring to someone who is trespassing on someone else's property.

Here are some other words that can be used as synonyms for "trespasser":

Intruder

Intruder

Intruder

Interloper

Invader

I hope this helps!