The female of the species is more deadlier than the male?
I used to get spider library books and leave them randomly open in different rooms in my flat so I would see the picture.
In the past I've used this thread similarly.
It does work a bit.
Apparently, too, keen spider spotters sometimes need to take a big breath when they come across a large one unexpectedly.
Oricum, it's 'deadlier', or 'more deadly'.
By the way, oricum was just me showing off my new Romanian language skills for no reason at all.
And it has right now occurred that you may have been using 'more deadlier' deliberately, but not as a lure to catch fish, rather as a web.