2 adjectives to describe flop

A hum from the argumentative villagers, a lazy flop in the tank as a raho rose to the surface, an occasional outburst from the ducks, an angry clamour from the water-hens and blue-fowl.

At first it was but a softness of the ground, causing me to slip as I walked, but soon the mud was over my ankles and half-way up to my knees, so that each foot gave a loud flop as I raised it, and a dull splash as I set it down again.

2 adjectives to describe  flop