unblushing

/ʌnˈblʌʃɪŋ/
adjective
  1. Not showing shame, embarrassment, or modesty; brazen or shameless.
    • The politician made an unblushing claim that everyone knew was false.
    • Her unblushing admission of cheating surprised even her closest friends.
    • He gave an unblushing smile after being caught taking the last cookie.
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