Still, Bad Pond Water
This page is the CodyCross answer for the clue below from Airport, Group 455, Puzzle 5 (Takeoff Distance).
Question is: Still, Bad Pond Water
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.