Psst is an onomatopoeic word which is used to get someone's attention in a quiet or secretive way. However, there are various alternatives available to this word which are used to grab someone's attention without being too loud or obvious. Some of the synonyms for pssts include hush, whisper, mutter, murmur, mumble, sotto voce, quiet, low key, and shush. These words offer a discreet way of conveying a message without disturbing others. Additionally, using a synonym may make a conversation less repetitive and more interesting. Hence, using synonyms for pssts can assist in maintaining confidentiality and keeping conversations confidential.