The word 'guais' appears to be a misspelling or an incorrect form. It is likely that you meant 'guis', which refers to a particular style or way of doing something but is not commonly used in English. If you're referring to a different word and it's not recognizable, please clarify or correct the spelling.
The term 'guise' originates from the Middle English word 'guise' or 'guise', derived from the Old French 'guise', which means 'manner' or 'way', related to an earlier Latin root 'gesta', meaning 'deed' or 'action'.