As Mick mentions in his comment, "to deem suit" is just a little previous-fashioned but not, I believe, plenty of that you should not find out how to make use of the idiom. I wouldn't get in touch with it "Victorian" English, as it's a phrase that sees normal use https://beckettmrvye.blogoxo.com/37009940/how-to-take-care-of-a-cat-uae-options