Noah Webster's Dictionary 1. (p. pr. & vb. n.) of Thicken. 2. (n.) Something put into a liquid or mass to make it thicker.

Multi-Version Concordance Thickening (1 Occurrence) Zephaniah 1:12 And it hath come to pass, at that time, I search Jerusalem with lights, And I have laid a charge on the men Who are hardened on their preserved things, Who are saying in their heart: Jehovah doth no good, nor doth He evil. (See RSV)