The past tense of Ante is anted.
verb. ['ˈænti'] place one's stake.
noun. ['ˈænti'] (poker) the initial contribution that each player makes to the pot.
1. Noun Phrase When you express time in a 12-hour system, the convention is to use a.m., which means ante meridiem (before midday) and p.m., which means post meridiem (after midday).