clearance
Word family
Synonym discussion
Sense: noun/5
Clearance, authorization, and approval all refer to official consent, but they differ in scope and process. Clearance typically implies that someone or something has been vetted or checked against specific criteria — for example, security clearance involves background checks, and customs clearance involves inspecting goods. Authorization is more formal and often written, granting someone the legal power to act (e.g., 'authorization to withdraw funds'). Approval is broader and can range from informal agreement to official endorsement, but it does not necessarily involve the layers of vetting that clearance implies. Permission is the most general term, covering any situation where someone is allowed to do something. In practice: 'The pilot received clearance to land' (air traffic control checks conditions first). 'The board gave its approval for the merger' (a decision is made). 'She has permission to use the library after hours' (a simple allowance).
Common collocations
Nouns
- security clearance
- clearance sale
- clearance certificate
- clearance process
- clearance time
Adverbs
- full clearance
- proper clearance
- final clearance
Phrases
- get clearance
- obtain clearance
- receive clearance
- need clearance
- grant clearance
- wait for clearance
Prepositions
- clearance for
- clearance from
- clearance to
Etymology
Clearance comes from the word 'clear' (meaning free from obstruction or bright), which entered English from Old French 'cler', itself from Latin 'clārus' meaning bright or distinct. The suffix '-ance' turns adjectives into nouns of action or state. The word first appeared in the 1500s with the general meaning of making clear. By the 1800s it had developed specific meanings in commerce (selling off stock), engineering (space between objects), and banking (cheque processing). The sense of official permission emerged in the 20th century, drawing on the idea of someone or something being 'cleared' — found free of objection after investigation.