couth /kuːθ/adjective 5noun 2forms 3 adjective5 •Marked by or possessing a high degree of sophistication; cultured, refined.So Dennis May thrilled me in a recent issue when he described Raymond Mays' 1939 E.R.A. racer as a "couth" little Merc-like model. — 1943 •(Scotland) Agreeable, friendly, pleasant. •(Scotland) Comfortable; cosy, snug.Squad leaders were responsible for doing periodic checks to make sure soldiers were living a couth lifestyle, as Joes would compete regularly to see whose room was nicer. — 2012 •(Scotland) Variant of couthie. •(no longer used) Familiar, known; well-known, renowned. noun2 •Social grace, refinement, sophistication; etiquette, manners.That man has no couth. •(rare) A person with social graces; a refined or sophisticated person.We transformed the uncouths into couths, the unkempts into kempts, the inerts into erts! We did it all by speaking to teen-agers on their own terms and in their own language. — 1967 formscouths · more couth · most couth