voiceless consonant
Linguistic term for a consonant produced without vocal cord vibration, such as /k/, /s/, /t/, /p/.
The consonant in Japanese 'ka' is a voiceless consonant.
有声子音 (voiced consonant) is the opposite, produced with vocal cord vibration, e.g., /g/, /z/, /d/, /b/.
Compound of 無声 (voiceless) and 子音 (consonant), a straightforward technical term.