loosen: loosen sb's tonguerozvázat jazyk komu
purse strings: loosen the purse stringspustit korunu uvolnit finance
povolit: povolit šroubloosen a screw
matice: utáhnout/povolit maticitighten/loosen a nut
povolit: Povolil si pásek.He loosened his belt.
uvolnit: uvolnit si kravatuloosen one's tie