The phrase "haddest a look see" is an archaic way of saying "had a look". If you're looking for synonyms to use instead of this phrase, there are several options to choose from depending on the context. For instance, you can use the phrases "checked out", "examined", or "inspected" to indicate that you took a closer look at something. Alternatively, you can use the words "observed" or "surveyed" to suggest that you looked at something in a more general sense. Keep in mind that the words you choose will depend on the context and tone you're aiming for.