Good Vocabulary: relevant words and phrases Certainty (as) apparent as day idiom (as) sure as eggs is eggs idiom and that is flat! idiom assure another person of one thing confident decidedly deffo definite absolutely definitive inviolably ironclad irrefutable irrefutably make no mistake (about this) idiom unquestionably unreserved unreservedly watertight https://rent44310.blogminds.com/apartment-things-to-know-before-you-buy-25916791