Uncapping means to remove a cap from a bottle or container. Synonyms for uncapping include decapping, opening, unsealing, unblocking, unstuffing, and untwisting. The term "decapping" is often used when referring to removing caps from medical vials or bottles. "Opening" is a general term often used when talking about jars, cans, or any other type of container. "Unsealing" is used to refer to a seal that prevents air from entering a container. "Untwisting" refers to the removal of a twist-off cap. "Unblocking" has a more specific use, usually referring to unclogging a container that has become blocked. "Unstuffing" commonly refers to removing a cap that is stuck due to overstuffing.