As Mick mentions in his comment, "to deem fit" is slightly outdated-fashioned although not, I believe, enough that you should not learn the way to make use of the idiom. I would not get in touch with it "Victorian" English, as it is a phrase that sees normal use even https://how-to-take-care-of-a-cat09763.pointblog.net/the-ultimate-guide-to-how-to-take-care-of-a-cat-uae-83325339