'Hadst one say' is an archaic phrase that is rarely used in modern English. However, similar expressions include 'spoke', 'expressed', 'communicated', 'voiced', 'uttered', 'pronounced', 'articulated', 'stated', 'declared', 'claimed', 'asserted', 'asserted', and 'affirmed'. These words convey the idea of conveying a message, opinion, or thought in words. The use of such expressions helps to prevent repetition in speech or writing and adds variety to language. In summary, 'hadst one say' can be considered an outdated expression, but there are plenty of alternatives available for communicating thoughts and ideas in today's audiences.