Keep your face to the sunshine and you cannot see a shadow.

In general contexts, caustic describes bluntly and harshly critical remarks, statements, or ways of being and communicating, as in "a caustic remark" or "caustic humor." In contexts involving chemistry, caustic is a synonym of corrosive, and is used to describe things capable of destroying or eating away matter by chemical action

Assay is a technical word meaning "to test something (such as a metal or drug) to find out what it contains or to assess its value."

Suffrage means “the right to vote in an election.”

1. the male head of family or household

2. a male who is a leading figure in a movement, discipline, industry, enterprise and so on

Duplicity is a formal word that refers to dishonest behavior meant to trick or deceive someone.

continually shifting or rapidly changing