'announceable' originates from English, formed by the verb 'announce' + the adjectival suffix '-able' (from Old French/Latin).

'announce' comes from Old French 'anoncer' / 'annoncier', ultimately from Latin 'annuntiare' (from ad- 'to' + nuntiare 'to report'); the suffix '-able' comes via Old French '-able' (from Latin '-abilis'). These elements combined in modern English to form 'announceable'.

Initially, related roots meant 'to bring or report news'; over time this evolved into the modern sense of 'to make known publicly,' and 'announceable' came to mean 'able to be made public'.