unloosen

/ʌnˈlusən/
verb
  1. To release or set free; to undo or untie something that is fastened (same meaning as 'unloose', but less common).
    • The rider unloosened the horse's girth after the long ride.
    • He tried to unloosen the tight knot in the string.
    • She unloosened her grip on the railing and stepped back.
  2. To free from restraint or control; to let something loose, such as emotions or forces.
    • The news unloosened a torrent of anger in the community.
    • The comedian's joke unloosened a burst of laughter from the audience.
    • He unloosened his feelings in a heartfelt letter.
Antonyms
What does "unloosen" mean? | whatsthatwordmean | whatsthatwordmean