Get across is a phrasal verb which means to convey a message or an idea to someone clearly and effectively. Some synonyms for get across include communicate, convey, express, articulate, proclaim, impart, disclose, and reveal. Other phrases that can be used in place of get across include make oneself understood, get through, put over, pass on, and deliver. It's important to choose the appropriate synonym depending on the tone and context of the message being conveyed. For example, proclaim may be more suited for a formal announcement, while express works well in casual conversation. Using synonyms for get across can add variety and clarity to your communication.