Pharisaical is an adjective used to describe someone who is hypocritical, self-righteous, and overly concerned with outward piety or the strict observance of rules while lacking true moral character. "Ad litem" is a Latin legal phrase meaning "for the suit" or "for the purposes of the legal action only". It refers to the court-appointed representation—typically a lawyer or child advocate—assigned to look out for the best interests of a minor or incapacitated adult during a specific legal proceeding. A "water battery" can refer to two very different, but equally fascinating technologies: a giant-scale grid energy storage system or an eco-friendly chemical battery using a water-based electrolyte. [