確信して

(1)having or feeling no doubt or uncertainty; confident and assured; "felt certain of success"; "was sure (or certain) she had seen it"; "was very sure in his beliefs"; "sure of her friends"

(2)疑いまたは不確実性を持たないか感じないさま

(3)自信があって確実な

(1)felt certain of success

(2)成功を確信した

(3)was sure (or certain) she had seen it

(4)彼女はそれを見たのは確かだった

(5)was very sure in his beliefs

(6)彼の信念において本当に確かだった

(7)sure of her friends

(8)彼女の友人に確信がある