acolastic
† acoˈlastic(ke, a. Obs.—0
[f. Gr. ἀκόλαστ-ος, see next, + -ic.]
‘A prodigall person.’ Cockeram 1612. ‘That liveth under no correction, riotous.’ Blount 1656. ‘Incorrigible, not better by chastisement.’ Bullokar 1676.
Useful english dictionary.
2012.