We add affixes to the base to indicate what we are doing. Prefixes are the initial affixes of a base word.

The prefix "me" in Indonesian daily vocabulary

"Makan" (Eat) become "Memakan" (Eating). Example; Jangan memakan itu,makanan itu untuk kakak!

"Mancing" (Fishing) become "Memancing" (Fishing). Example; Saya pergi memancing kemaren.

"Tulis" (write) become "Menulis" (Writing). Example; Dokter menulis resep obat untuk pasien.

"Pegang" (Hold) become "Memegang" (holding). Example; Aku memegang tangannya erat-erat.

"Pasang" (install) become "Memasang" (put up). Example; Aku akan memasang foto itu di dinding.