shameless

/ˈʃeɪmləs/
adjective
  1. Feeling or showing no shame, embarrassment, or regret for doing something wrong or improper.
    • His shameless behavior at the party embarrassed his friends.
    • The politician made a shameless promise he knew he couldn't keep.
    • She gave a shameless grin after being caught stealing cookies from the jar.
  2. Done in a way that is obvious and without any attempt to hide it, often in a bold or brazen manner.
    • The movie was a shameless rip-off of a popular superhero film.
    • The advertisement was a shameless attempt to copy a competitor's slogan.
    • He made a shameless grab for the last piece of cake right in front of everyone.