Nouns

(n)soundinga measure of the depth of water taken with a sounding line
(n)soundingthe act of measuring depth of water (usually with a sounding line)

Adjectives

(s)looking, soundingappearing to be as specified; usually used as combining forms“left their clothes dirty looking”, “a most disagreeable looking character”, “angry-looking”, “liquid-looking”, “severe-looking policemen on noble horses”, “fine-sounding phrases”, “taken in by high-sounding talk”
(s)soundinghaving volume or deepness“sounding brass and a tinkling cymbal”, “the sounding cataract haunted me like a passion” (Wordsworth)
(s)soundingmaking or having a sound as specified; used as a combining form“harsh-sounding”