Continuant
WordNet
adjective
(1) Continually recurring or continuing without interruption
"Constant repetition of the exercise"
"Constant chatter of monkeys"
(2) Of speech sounds produced by forcing air through a constricted passage (as `f', `s', `z', or `th' in both `thin' and `then')
noun
(3) Consonant articulated by constricting (but not closing) the vocal tract