Yes it does have a negative connotation especially when used with slave. Many people will roll their eyes and make it appear that the case of someone using the negative connotation of master/slave in ...

We tend to assume that emotionally charged words are more likely to grab our attention. An insult shouted across a crowded room or a disturbing phrase overheard on television can seem impossible to ...

The word "naive", while not inherently bad, does tend to carry negative connotations with it, because IME, most of the times it is used, it's intended as an insult. It's similar to the word "ignorant" ...

(CNN) -- It turns out children really are listening to what you say. Children who overheard someone saying negative words about a particular group of people developed negative biases toward them, ...