surd

surd is an   Adverb

Definition:

[1] Net having the sense of hearing; deaf. [Obs.] "A surd . . . generation." Sir T. Browne.

[2] Unheard. [Obs.] Kenrick.

[3] Involving surds; not capable of being expressed in rational numbers; radical; irrational; as, a surd expression or quantity; a surd number.

[4] Uttered, as an element of speech, without tone, or proper vocal sound; voiceless; unintonated; nonvocal; atonic; whispered; aspirated; sharp; hard, as f, p, s, etc.; -- opposed to sonant. See Guide to Pronunciation, §§169, 179, 180.

Synonyms: