確然たる

(1)precise; explicit and clearly defined; "I want a definite answer"; "a definite statement of the terms of the will"; "a definite amount"; "definite restrictions on the sale of alcohol"; "the wedding date is now definite"; "a definite drop in attendance"

(2)的確な

(3)明白で明確に定義される

(4)impossible to deny or disprove; "incontrovertible proof of the defendant's innocence"; "proof positive"; "an irrefutable argument"

(5)否定、または反証することできない

(6)persuaded of; very sure; "were convinced that it would be to their advantage to join"; "I am positive he is lying"; "was confident he would win"

(7)確信して

(8)非常に確かな

(1)were convinced that it would be to their advantage to join

(2)参加することが彼らの利点になることを確信していた

(3)I am positive he is lying

(4)彼が嘘を言っていることに確信している

(5)was confident he would win

(6)彼が勝つと確信していた