What does clear mean?
Clear is one of English's most versatile words, serving as an adjective, verb, adverb, and even occasionally a noun. At its core it describes something easy to perceive or understand — a clear explanation leaves no room for confusion, while a clear sky offers no clouds to obscure the sun. It also conveys transparency, physical openness, and freedom from doubt, debt, or blame. As a verb, clear removes obstacles or unwanted material, whether clearing a table, clearing land, or clearing up a misunderstanding. Derived from the Latin 'clarus', meaning bright or illustrious, it shares ancestry with words like 'clarify' and 'declare'. Its ubiquity makes it essential vocabulary: few conversations about communication, weather, permission, or finance pass without it. Idioms such as 'crystal clear' and 'in the clear' show how deeply embedded it is in everyday expression.
Easy to perceive, understand, or interpret; also transparent, unobstructed, or free from doubt.
"The instructions were clear enough for anyone to follow."
Frequently intensified in the idiom 'crystal clear'.
To remove obstructions, unwanted items, or uncertainty; to make or become free of something.
"They cleared the fallen branches from the road after the storm."
In a way that avoids obstruction or interference; completely or entirely free of something.
"The ball sailed clear over the fence."
An unobstructed space or distance, especially the amount of room needed for safe passage or operation.
"The bridge has a vertical clear of just under five metres."
Rare outside technical contexts such as engineering and aviation.
When you say something is 'crystal clear', you're echoing an ancient Latin word for bright and shining — 'clarus' — the same root that gave us 'clarify', 'clarion', and even the clarinet.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of clear
Clear entered Middle English from Old French 'cler', which itself descends from the Latin adjective 'clarus', meaning bright, shining, or distinguished. The Latin root spread widely across Romance languages and into English borrowings, giving rise to related words such as 'clarify', 'declare', and 'clarion'. Over centuries, its meaning broadened from literal brightness and sound to encompass mental clarity and freedom from obstruction.
Related word forms
How clear is actually used
'Clear' is neutral in register, appearing equally in everyday speech and formal writing. As a verb it is often used figuratively ('clear the air') as well as literally ('clear the table'). The phrase 'crystal clear' is so common it functions almost as its own unit of meaning.
Easily confused with clear
'Clear' means easy to see through or understand, while 'sheer' means pure and unmixed, or steep and almost vertical.