Remaining silent refers to the act of keeping quiet or not speaking up about a particular matter. However, there are other words or expressions that can be used to convey the same meaning. One can opt to remain mum, stay hushed, keep mum, refrain from speaking, hold one's tongue, or be silent. Similarly, one can choose to keep quiet, keep one's peace, or keep silent. Furthermore, one can decide to say nothing, keep a low profile, or zip one's lips. All these words and expressions can be used interchangeably with 'remain silent', depending on context and personal preference.