Omen, evil, pemali.

Once, sa-kali.

Only, sahaja, hania.

Onion, bawang.

Open, ter-buka;

(extensive), lapang, luas;

(to open), buka, mem-buka.

Opening (chink), chelah.

Opinion, rasa, pe-rasa-an, sangka, kira, pikir-an.

Opium, apiun, madat, chandu.