Sentence:  His hand went to her shoulder and pushed aside the knotted scarf that surmounted the striped poplin gown ; then , to <WSD>better</WSD> purpose , he took hold of the knot and with dextrous fingers , untied it . 
Meaning of the word marked with <WSD> tags:  (comparative of `good') superior to another (of the same class or set or kind) in excellence or quality or desirability or suitability; more highly skilled than another