ETYM Latin, from Greek, to set against, to oppose; anti against + stellein to set. Related to Thesis.
(Irregular plural: antitheses).
1. Exact opposite.
2. The juxtaposition of contrasting words or ideas to give a feeling of balance.
3. Contrast of ideas by means of parallel arrangement of words or clauses.
4. Opposite; contrast; Literature, device of parallel but contrasted phrases or sentences, second stage of reasoned argument, opposing the thesis.
5. The balancing of two contrasting ideas, usually in the same sentence.