What does anticlockwise mean?
Anticlockwise describes movement in the direction opposite to that taken by the hands of an analogue clock — that is, from the top toward the left. It functions chiefly as an adverb ('turn the dial anticlockwise') and occasionally as an adjective ('an anticlockwise orbit'). The word is standard in British English and much of the Commonwealth, while American English uses the equivalent term 'counterclockwise'; the two are interchangeable in meaning but rarely cross regional boundaries. Anticlockwise appears constantly in practical instructions — opening screw-top jars, loosening bolts, stirring mixtures — since many everyday mechanisms are designed to be operated against the clock's direction. Its counterpart, clockwise, is its natural antonym. For anyone reading recipes, DIY manuals, or scientific descriptions written outside North America, knowing this word is essential for following directions correctly.
In the direction opposite to that in which the hands of a clock rotate.
"Screw the fitting anticlockwise to remove it."
Chiefly British; American usage prefers 'counterclockwise'.
Moving or oriented in the direction opposite to that of a clock's hands.
"The storm's anticlockwise rotation is typical of Northern Hemisphere cyclones."
Less common than the adverbial use.
The word Americans call 'counterclockwise' is simply 'anticlockwise' across the Atlantic — same motion, different prefix.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of anticlockwise
Anticlockwise was formed in English by combining the prefix 'anti-' (from Greek, meaning 'against' or 'opposite') with 'clockwise', itself derived from 'clock' plus the suffix '-wise' (meaning 'in the manner of'). It emerged in the nineteenth century as analogue clocks made rotational direction a familiar reference point. It shares its '-wise' suffix with related directional terms such as 'clockwise', 'likewise', and 'lengthwise'.
How anticlockwise is actually used
Primarily used in British English; American English strongly prefers 'counterclockwise'. Functions both as an adverb and, less commonly, as an adjective describing something moving in that direction.
Easily confused with anticlockwise
Clockwise describes motion in the same direction as a clock's hands, while anticlockwise describes motion in the opposite direction.