Verily is a word with a distinct tone of certainty and truthfulness that has long been used in literature and speech. It emphasizes the speaker's conviction and assurance, similar to the words "certainly" and "truly." Other synonyms of verily include "indeed," "assuredly," "unquestionably," "undoubtedly," and "absolutely." These words imply a strong belief in the truth of a statement or the legitimacy of a claim. They are often used to stress the speaker's conviction and make a point emphatically. While the word verily may be less commonly used in modern-day language, its synonyms continue to express certainty and truthfulness in both formal and informal conversations and writings.