something that will surely happen

確実なこと, 間違いなし
according to facts instead of opinions

具体的な, 明確な
in a definite and clear manner due to being based on facts instead of ideas or guesses

具体的に, 明確に
the belief in one's own ability to achieve goals and get the desired results

自信 (じしん), 信頼 (しんらい)
having a strong belief in one's abilities or qualities

自信がある (じしんがある), 確信している (かくしんしている)
in a way that shows confidence and trust in oneself or another person's abilities, plans, etc.

自信を持って, 確信を持って
a belief or opinion that is very strong

信念 (しんねん), 確信 (かくしん)
having a strong belief in something

確信している, 納得している
to put trust in something or someone

頼る (たよる), 信頼する (しんらいする)
to check the accuracy or validity of something by using alternative sources or methods

クロスチェックする, 確認する
an act of determining the accuracy or credibility of something by comparing it with various sources

クロスチェック, 相互確認
in a way that is certain and beyond any doubt

明らかに, 断然
certainly happening and unlikely to change

確定的な, 明確な
to have confidence or trust in someone or something

頼る, 依存する
in a critical and arrogant manner therefore refusing to consider other's opinions

独断的に, 教条的に
to believe something strongly, even though one cannot explain why
something that is assumed to be true or already decided upon before any evidence or arguments are presented

予想された結論 (よそうされたけつろん), 既定の結論 (きていのけつろん)
to make sure that something will occur

保証する (ほしょうする), 確実にする (かくじつにする)
