Green’s Dictionary of Slang

crackawly n.

[? Possibly OE 'Crack' - a crazy or soft-headed person. The Irish 'Éalaí' may have been added. (Partridge) Note 'Crackaulee' - a giddy young person of destructive habits, or 'Creacaill' - a person of cross diposition; also 'Creacaille, perhaps 'Creach aillidhe' (unwarranted suffix of agency) or English 'Crack-all. Note 'Craiceálaí' (Waterford). (Ó h-Éaluithe)]

(Irish/ Cork) a stupid individual.

[Ire]L. McInerney Glorious Heresies 165: Crackawlies instructed to hold seances in my sitting room while my kids are doing their homework.
[Ire]L. McInerney Rules of Revelation 340: ‘You utter crackawly’.