【洗える通勤スーツ】レジェールギャバ　ストレッチカラーレスジャケットAs Mick mentions in his remark, "to deem fit" is a little aged-fashioned but not, I do think, ample that you should not learn the way to use the idiom. I would not call it "Victorian" English, as it's a phrase that sees frequent use even right now.