Keeley is a unisex name of Irish and Scottish origin. Meaning in Irish: War. Lively. Aggressive. An Irish surname that has only been used as a first name (either gender) in the latter half of the 20th century. Meaning in Scottish: Wood. Surname and place name that has only been used as a first name (either gender) in the latter half of the 20th century. Keeley is a variant of Kelly. The name has 6 letters.