Depending on the context (and voice inflection) it can either be a compliment, i.e., you have the ability to craft phrases and use the language to clearly describe your meaning, or, it can mean that you have the ability, again because of your ability to use words to twist meanings. deflect criticism, or falsely flatter to your advantage that can cause mistrust and possibly dislike of you...
"'Brown bread and butter! Brown bread and butter???? You great, fat, ugly, idle wart. You spawny-eyed, parrot-faced wazzock!'" He had a way wi' words did me fatha!