selly in English dictionary selly Meanings and definitions of "selly" adjective (Britain dialectal, Northern England, Scotland) Rare; wonderful; admirable. adverb (Britain dialectal, Northern England, Scotland) Wonderfully, wondrous. noun (Britain dialectal, Northern England, Scotland) A marvel; wonder; something wonderful or rare. more Grammar and declension of selly selly (comparative sellier or more selly, superlative selliest or most selly) selly (plural sellies) more Sample sentences with "selly" Declension Stem Try again Authors