III. Offenses Against Truth

From The Catechism of the Catholic Church

2480
Every word or attitude is forbidden which by flattery, adulation, or
complaisance encourages and confirms another in malicious acts and perverse
conduct. Adulation is a grave fault if it makes one an accomplice in another’s
vices or grave sins. Neither the desire to be of service nor friendship
justifies duplicitous speech. Adulation is a venial sin when it only seeks to be
agreeable, to avoid evil, to meet a need, or to obtain legitimate advantages.

PART THREE: LIFE IN CHRIST

SECTION TWO THE TEN COMMANDMENTS
- CHAPTER TWO YOU SHALL LOVE YOUR NEIGHBOR AS YOURSELF
  - Article 8 THE EIGHTH COMMANDMENT
    - III. Offenses Against Truth

From The Catechism of the Catholic Church – rosary.team