Sentence:  wherfor the quene waxed wroth with sir Launcelot / and vpon a day she called sir launcelot vnto her chamber and saide thus / Sir launcelot I see and fele dayly that thy loue begynneth to <WSD>slake</WSD> / for thou hast no Ioye to be in my presence / but euer thou arte oute of thys Courte<!--Prior quote:‘Sir Launcelot, I se and fele dayly that youre love begynnyth to <WSD>slake</WSD>, for ye have no joy to be in my presence, but ever ye ar oute of thys courtenb....'--> 
Meaning of the word marked with <WSD> tags:  To become less intense; to weaken, decrease in force. (14th-19thc.)