emit

verbs

expel (gases or odors)

breathe, emit, pass off

is derived from

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"

emit, give off, give out

is derived from

is derived from

antonym

express audibly; utter sounds (not necessarily words)

"She let out a big heavy sigh"; "He uttered strange sounds that nobody could understand"

emit, let loose, let out, utter