Squelchy means making a wet sucking sound when pressed. Squelchy mud, a squelchy field, squelchy boots.
The sound is air and water being forced out of ground that is saturated, which is why it means very wet rather than merely damp. The word imitates the noise, as squelch does, and belongs to walking and to bogs.
1adjectivesquelchyMaking a wet sucking sound when pressed.
“Our boots made squelchy noises as we crossed the muddy field.”
squelchy is a quality of sound.
Squelch plus -y. Squelch imitates the sound, first recorded in the seventeenth century.
From squelch + -y.
Etymology from Wiktionary, CC BY-SA