Appendix:Finnish polarity pairs

In Finnish, the clitics and, and some words (mainly adverbs or conjunctions) in which they have become lexicalized, form polarity pairs, where the former is used as a  and the latter as a.

This means that in affirmative and negative sentences, the positive and negative  polarity forms are generally used, respectively:

However, in interrogative sentences (questions), either can be used, but the nuance is different:

Note that the polarity also applies to certain grammatical features, such as the marking of telic objects in sentences:

The polarity of these words does not have to correlate with the presence or absence of in the sentence:

Like in English, there are environments where negative polarity items can appear in affirmative sentences and vice versa (some examples):