emit

Verb

• express audibly; utter sounds (not necessarily words)
  • She let out a big heavy sigh
    
  • He uttered strange sounds that nobody could understand
    

• give off, send forth, or discharge; as of light, heat, or radiation, vapor, etc.
  • The ozone layer blocks some harmful rays which the sun emits
    

• expel (gases or odors)

Related words

• Synonyms: 
  utter , let out , let loose , give out , give off , breathe , pass off
• Antonyms: 
  absorb , take in