What does unbelt mean?
Unbelt is a transitive verb meaning to release, remove, or loosen a belt. Its best-known use is in aviation, where it refers to undoing a seat belt or safety harness, especially when an aircraft has reached a safe condition for passengers to move around. The verb can also describe loosening or removing an ordinary belt worn around the waist or with clothing. Although its meaning is intuitive, “unbelt” is much less common than “unbuckle” or the broader “remove.” It is especially useful in safety instructions, where its specific focus on releasing a restraint provides direct and easily understood wording. In less specialized contexts, the verb can sound slightly formal or old-fashioned, and speakers are more likely to use “unfasten,” “take off,” or “loosen.”
verbTo remove or loosen a belt, especially a safety belt or restraint harness. It can also mean to release a person from such a belt.
- To release a person from a seat belt, safety harness, or other restraint.
- To remove or loosen a belt worn at the waist or attached to clothing.
"Passengers should not unbelt until the aircraft has come to a complete stop."
"The cabin crew instructed the passengers to unbelt after landing."
"He unbelted his trousers and sat down at the table."
In an aircraft announcement, “unbelt” means exactly what it sounds like: release your restraint.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does unbelt come from?
Unbelt was formed in English by combining the prefix un-, meaning to reverse or undo an action, with belt. Belt is an old English word with close Germanic cognates such as Dutch belt and German Belt, and it also has relatives associated with Latin balteus, meaning a belt or girdle. From the same Latin family come baldric and balteate.
Related word forms
How unbelt is actually used
This is a relatively uncommon verb, best known from aviation and other safety-restraint contexts. It is normally transitive and has a formal, instructional tone.
Easily confused with unbelt
Unbuckle specifically means to undo a buckle, whereas unbelt more broadly means to release or loosen a belt or restraint.