Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. A person who is opposed to something, such as a group, policy, proposal, or practice.
  • adj. Opposed: "Douglas MacArthur had a coterie of worshipers, balanced off by an equal number . . . who were vehemently anti” ( Joseph C. Harsch).
  • prep. Opposed to; against.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • adj. Describing a torsion angle between 90° and 180°
  • n. A person opposed to a concept or principle.
  • prep. A word used before a noun or noun phrase to indicate opposition to the concept expressed by the noun or noun phrase.

from the GNU version of the Collaborative International Dictionary of English

  • A prefix meaning against, opposite or opposed to, contrary, or in place of; -- used in composition in many English words. It is often shortened to ant-.

from The Century Dictionary and Cyclopedia

  • n. A prefix of Greek origin: originally only in compounds or derivatives taken from the Greek or formed of Greek elements, as in antipathy, antinomy, etc. (the earliest example in English being antichrist, which see), but now a familiar English formative, meaning primarily against, opposed to.
  • n. One who is opposed to some proposed or undertaken course of action, policy, measure, movement, or enactment, as, for example, to imperialism.
  • n. In chem., a prefix used to indicate that two groups or two atoms which might react with each other are so separated in space that they do not readily do this. It is contrasted with the prefix syn-. Thus in antibenzaldoxime, , the H and OH do not readily combine to form water, while in synbenzaldoxime, , such a combination takes place easily.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a person who is opposed (to an action or policy or practice etc.)
  • adj. not in favor of (an action or proposal etc.)

Etymologies

From anti-.
(American Heritage® Dictionary of the English Language, Fourth Edition)
Conversion of the prefix anti- to an adjective, from Latin anti, from Ancient Greek ἀντί (antí, "against, opposite, instead of"), from  (ánta), from Proto-Indo-European *anti (compare Hittite hanza 'front', Latin ante 'before', Tocharian A ánt(e) 'forehead', Gothic and 'throughout', Lithuanian añt 'on, in order to', Ossetian ändä 'outside', Sanskrit ántas 'end, boundary'). (Wiktionary)

Examples

Comments

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  • Does anyone feel or know of any phonological, geographical or sociolinguistic differences between the pronunciations /ˈæntaɪ/ and /ˈænti/ within the US?
    (Or perhaps for semi-?)

    Thanks!

    December 27, 2009