Correct spelling for the English word "mum the word" is [mˈʌm ðə wˈɜːd], [mˈʌm ðə wˈɜːd], [m_ˈʌ_m ð_ə w_ˈɜː_d] (IPA phonetic alphabet).
"Keep mum" or "mum's the word" is an idiomatic expression used to encourage secrecy or discretion, urging someone to remain silent or not reveal certain information. Derived from the archaic word "mum," meaning silent or quiet, this phrase emphasizes the importance of maintaining confidentiality or avoiding the disclosure of sensitive details.
When someone is told to "keep mum" or "mum's the word," it signifies a need for the utmost discretion and restraint in sharing certain facts, gossip, plans, or secrets with others. It implies refraining from divulging information that may be confidential, embarrassing, or potentially cause harm or trouble to oneself or others. This phrase is often utilized in situations where confidentiality or secrecy is crucial, such as in legal matters, professional environments, investigations, or personal relationships.
"Keeping mum" suggests that one should refrain from speaking about certain matters even if asked directly. It conveys the expectation that an individual will adhere to a vow of silence and exercise extreme caution in not spreading rumors, leaking classified information, or violating an agreement of confidentiality. By following the instruction to "mum the word," one agrees to be trustworthy and loyal by safeguarding sensitive information and ensuring it stays hidden or limited to a select few.