To ponder well, think over, deliberate; to know, understand. Nagsayúp siá, kay walâ siá makasiási. He made a mistake, because he did not think things over well beforehand. (see painóíno, libólíbo, pamalándong, basóbáso, asíási, entiénde, sáyod, hunâhúnà, sayási, sayásat, siásat).