the best thing there ever was. (Usually sarcastic.) • To hear her talk, you would think she had found the greatest thing since sliced bread. • Todd thinks he is the greatest thing since sliced bread.
Since time immemorial
If something has happened since time immemorial, it's been going on for such a long time that nobody can remember a time without it.
An since idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with since, allowing users to choose the best word for their specific context.
Dictionary of similar words, Different wording, Synonyms, Idioms for Idiom, Proverb since