Fortisadjective
(phonetics) Strongly articulated (of a consonant), hence voiceless.
Fortisnoun
(phonetics) A fortis consonant.
Lenisadjective
(phonetics) Weakly articulated (of a consonant), hence voiced; especially as compared to the others of a group of homorganic consonants.
Lenisnoun
(phonetics) A lenis consonant.