surd

Từ điển WordNet v3.1 - WordNet Dictionary

I - noun

a consonant produced without sound from the vocal cords
• Syn:
voiceless consonant
• Hypernyms:
consonant

II - adjective

produced without vibration of the vocal cords
- unvoiced consonants such as 'p' and 'k' and 's'
• Syn:
unvoiced, voiceless, hard
• Ant:
voiced (for: unvoiced)
• Similar to:
whispered
• Derivationally related forms:
voicelessness (for: voiceless)

• Từ đồng nghĩa / Synonyms:
  unvoiced, voiceless, hard, voiceless consonant
• Từ trái nghĩa / Antonyms:
  voiced, sonant, soft