The phrase "being one ears in" can be replaced by several synonyms that convey the same meaning. One such synonym is "overhearing," which describes the action of accidentally listening to a conversation. Another synonym is "eavesdropping," which refers to intentionally listening to a conversation without the knowledge or consent of the speakers. "Listening in" and "tuning in" are also synonymous with "being one ears in," as they suggest the act of listening to a conversation that one is not necessarily a part of. Regardless of the synonym used, the implication is the same: the listener has gained knowledge or information about a conversation or situation they may not have otherwise been privy to.