Unmoving, Motionless; Foul-Smelling

This page is the CodyCross answer for the clue below from House of Horrors, Group 1105, Puzzle 3 (Grandfather Clock).

Question is: Unmoving, Motionless; Foul-Smelling

and the answer is: STAGNANT

Word Meaning:

STAGNANT — Lacking flow or motion, and thus usually not fresh or healthy; decaying through stillness.

Definitions from Wiktionary.