slaky,a.|ˈsleɪkɪ| [f. slake n.3 + -y.] Muddy. 1841Proc.Berw.Nat. Club I. 250 The low and slaky shore that extends from Berwick Bay to Fenham Flats.1901Trans. Stirling Nat.Hist.Soc. 70 The swampy ground had assumed a different aspect. Its slaky condition had disappeared.