We often do a lot of madness in our life. We also come across people who do foolishness. The most common synonyms for madness are mindlessness, silliness, recklessness, imprudence, thoughtlessness and so on. Here are some words related to mindlessness, stupidity, silliness, and foolishness you can use in your every day English conversation.
Obtuse: stupid or slow to understood, or unwilling to try to understand
Fatuous: stupid, or not carefully thought about
Frivolous : behaving in a silly way and not taking anything seriously
Screwball: a person who behaves in a strange and funny way
Foolery: silly behavior
Vacuousness: the quality of showing no intelligent thought
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