Lewis Short
(verb) : ăcĕo, ui, 2, v. 2. acer
* To be sour.
* Lit. (of wine): vinum, quod neque aceat neque muceat,Cato R. R. 148.
* Fig., to be disagreeable (late Lat.): mentio pectori acet,Sid. Ep. 7, 6 a med.
Charlton T. Lewis, Charles Short, A Latin Dictionary