loosen

verb

1. 1

   To make loose.

   “After the Thanksgiving meal, Bill loosened his belt.”

2. 2

   To become loose.

   “I noticed that my seatbelt had gradually loosened during the journey.”

3. 3

   To disengage (a device that restrains).

4. 4

   To become unfastened or undone.

5. 5

   To free from restraint; to set at liberty.

6. 6

   To relieve (the bowels) from constipation; to promote defecation.

7. 7

   To create a breach or rift between (two parties).

8. 8

   To sail away (from the shore).