blither UK /ˈblɪðə/US /ˈblɪðəɹ/noun 2verb 1forms 3 noun2 •(dialect, informal) Foolish or nonsensical talk; blather; (countable) an instance of this."There's a lot of blither talked about women's economic independence today, but the real reason that drives them into offices and factories is to escape from the kitchen." — 1950 •(disapproving, old-fashioned) A foolish person; a fool, an idiot.Indeed, it was Mr. Buck's private opinion that in the matter of plants and flowers Sir John and Lady Moulter were "a pair of old blithers." — 1896 verb1 •(UK, informal) To talk foolishly; to blather.Personality is what I am aiming at, not mere manners. That is not strong enough for a man who "blithers" as you do. — 1898 formsblithered · blithering · blithers