Tubbable is a rare word that refers to an object or thing that can be placed or fit inside a tub. But if this term seems too cumbersome or unfamiliar to use in everyday language, there are several synonyms that you can employ to convey the same meaning. Some of the most commonly used alternatives for the word tubbable include bathable, immerse-able, soakable, washable, submergible, and dip-able. These words not only sound more familiar but also make the communication more precise and understandable, allowing you to describe an object's capacity to be submerged in liquid in simpler terms.