“Clear” is a common English word with multiple related senses. As an adjective it often describes something transparent, unobstructed, or easy to perceive. As a verb it means to remove obstructions, to make something free of items or doubt, or to obtain official permission. Because of its wide applicability, the word appears in many idioms and specialised contexts.
Main senses and examples
- Transparent or bright — visible through or allowing light to pass (e.g., clear glass; clear water).
- Unobstructed or free — without barriers or clutter (e.g., a clear path; the road is clear).
- Unambiguous or easily understood — obvious or definite (e.g., a clear explanation; the meaning is clear).
- To remove or resolve (verb) — to clear a table, clear an email inbox, or clear up a misunderstanding.
- Official permission or completion — to clear customs, be cleared for takeoff, or have charges cleared in a legal sense.
- Technical uses — in computing, to clear a screen or cache; in finance, to clear a trade or check through a clearinghouse.
The word also appears in fixed phrases such as “all clear” (an announcement that danger has passed), “clear title” (a property title without liens), and “clear and present danger” (a legal and rhetorical phrase about imminent risk).
Origins and distinctions
The modern English adjective derives from older European words for brightness and clarity. Related words include "clarity" and the adverb "clearly." Distinguishing similar words can be useful: "clear" often implies absence of obstacle or ambiguity, while "transparent" stresses literal or metaphorical see-through quality, and "clean" emphasizes lack of dirt rather than visibility or understanding.
Because it functions as adjective, verb and adverbial base for derived forms (clearly, clearance, clearing), "clear" is flexible in both everyday speech and specialised domains. Its adoption into technical vocabularies—aviation clearances, financial clearing, computing commands—illustrates how a simple core meaning (making free or obvious) has been extended to many practical activities.
In use, context determines the intended sense: a weather report saying "clear" refers to skies without clouds; a banker saying a check has "cleared" means the funds have been processed; and a teacher praising a student’s answer as "clear" means it is understandable. Such versatility makes "clear" a small but central word in English communication.