Voiceless Consonants

Voiceless consonants do not use the vocal cords to produce their hard, percussive sounds. Instead, they're slack, allowing air to flow freely from the lungs to the mouth, where the tongue, teeth, and lips engage to modulate the sound.

These are the voiceless consonants: Ch, F, K, P, S, Sh, T, and Th (as in "thing"). Common words using them include:

Washed