We usually refer to these sounds as the sounds of footsteps. The sounds are made by a bare foot, shoe or boot coming in contact with a surface. The sound that is made depends on 4 factors: 1 bare feet or the material that the soul of the shoe is made of, e.g. leather, plastic, metal and the weight of the material = light or heavy. 2 the surface of the ground, e.g., mud, wood, cement, marble, ceramic, steel, gravel, sand, etc 3 the weather conditions that affect the walking surface, i.e., the condition of the walking surface (dry, wet, hard, soft, loose, snowy) 4 the speed of the steps (walking, running, hopping, jumping, shuffling (not lifting your feet) So, some of the common adjectives that are used to describe the sounds of footsteps could include any of the following: - light or heavy footsteps - clicking of the bottom of the shoes on a hard surface - clackety-clack (same as above) - clacking (same as above) - thumping (sound usually made by heavy people wearing no shoes or heavy shoes or boots) - thud (louder than, but similar to the above) - squishing, e.g. bare feet, shoes or boots in mud or very wet soil - tip tap (a lighter sound like a hard material on a hard floor surface) - cat-like (quiet, trying not to be heard, similar to Bruce's "stealth" =silent) - silent - flip-flop, like the sound made by flip-flops tongs - shuffling (dragging/not lifting one's feet) - pitter-patter: the sounds a baby's footsteps make, e.g. the pitter-patter of tiny footsteps. Here are a few other examples: - The high-pitched squeak of tennis shoes on a basketball court. - The crunch of gravel under hiking boots. - The scrape of leather shoes on concrete. - Rubber soles squelching across wet grass. OK... that's enough, I'm going for a walk.... :)

The sound of walking of ninjas. = "stealthy movement"

Walking creates what are know as "footfalls": His footfalls were heavy as he climbed the steps. I but I don't know if to works for ninjas. I don't have a sense of the noise they make.

so the other ninjas fired me :(

ninja footsteps could be called: silent footsteps, creeping footsteps, and sometimes the word footstep would not be used and we might say: silently or quietly approaching/advancing/moving forward. I used to be a ninja, but I couldn't stop making sounds when I walked, so