Meaning Taken from the word Caollaidhe, the name Keely means 'slender' 'graceful' and 'fair', and is predominantly used in Irish and English language. Origin of Keely Celtic , Irish Popular Middle Names Ann, Faye, Roberta Pronunciation 🔊 Listen Keely KEE-lee Similar Names Teagahn Keilah Rhian Ella May Demi Lee Ruby Grace Mathilde Evelynne Jessica Taasia Year by Year Popularity of Keely