Greek 'against,' from PIE 'front' — one of English's most productive prefixes, hiding inside 'Antarctic' (opposite the Bear).
A prefix meaning 'against,' 'opposite,' or 'in opposition to,' used extensively in English to form words expressing opposition, counteraction, or prevention.
From Greek 'antí' (ἀντί, against, opposite, in place of), from PIE *h₂enti (front, forehead, before, against). The prefix entered English both through Latin and directly from Greek, initially in learned and scientific compounds. In Greek, 'antí' could mean 'against' (as in 'antíthesis'), 'opposite' (as in 'antípodes'), or 'in place of' (as in 'antíphōn'). English has adopted
The word 'Antarctic' literally means 'opposite the Bear' — from 'anti-' (opposite) + 'arktikós' (of the bear), referring to the northern constellation Ursa Major. Antarctica is the land opposite the Arctic, which itself is named for the bear in the sky. So the coldest place on earth is named for the absence of a celestial bear.
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