Polarity particle

From Teflpedia

A polarity particle is a particle that expresses polarity.

In English there are three types of polarity particles;

Not is also traditionally analysed as an adverb, but is somewhat different from other adverbs. Though it is a prefix rather than a word, negative n- can also be considered a polarity particle.

Historically, English had additional polarity particles. In colloquial speech, the words aye and yea are also used positively, and the word nay negatively.