let loose > define

verb

• Express audibly; utter sounds (not necessarily words. )
  • usage: "She let out a big heavy sigh"; "He uttered strange sounds that nobody could understand"
  • synonyms: utter, emit, let out
• Turn loose or free from restraint.
  • usage: "let loose mines"; "Loose terrible plagues upon humanity"
  • synonyms: unleash, loose