noun, noun or participle which takes 'suru'
view optimistically; take an optimistic view
Used when someone sees a situation in a positive light, often implying they may be underestimating risks. Commonly used as a suru-verb.
彼はいつも物事を楽観視する傾向がある。
He tends to view things optimistically.
その見通しを楽観視し
You shouldn't be too optimistic about that outlook.