Thick and Slow-Moving, Like Honey or Tar

This page is the CodyCross answer for the clue below from Forms of Communication, Group 2234, Puzzle 4 (Voicemails).

Question is: Thick and Slow-Moving, Like Honey or Tar

and the answer is: VISCOUS

Word Meaning:

VISCOUS — Having a thick, sticky consistency between solid and liquid (that is, a high viscosity).

Definitions from Wiktionary.