AffixesEdit
In Indonesian, affixes take on an important role because slightly different affixes may have very different meanings. There are four types of affixes: prefixes (awalan), suffixes (akhiran), circumfixes (apitan) and infixes (sisipan). Affixes are categorized into noun, verb, and adjective affixes. Root words are either nouns or verbs, which can take on affixes to generate new words, for example, masak (to cook) may become memasak (cooks), memasakkan (cooks for), dimasak (cooked), pemasak (a cook), masakan (a meal, cookery). Many initial consonants alternate in the presence of prefixes: sapu (to sweep) becomes menyapu (sweeps/sweeping); panggil (to call) becomes memanggil (calls/calling), tapis (to sieve) becomes menapis (sieves).
Other examples of the use of affixes to change the meaning of a word can be seen with the word ajar (teach):