Antithesis :: Antithesis (n.) An opposition or contrast of words or sentiments occurring in the same sentence; as, The prodigal robs his heir; the miser robs himself. He had covertly shot at Cromwell; he how openly aimed at the Queen..
Antithesis :: Antithesis (n.) The second of two clauses forming an antithesis.
Antithetical :: Antithetical (a.) Pertaining to antithesis, or opposition of words and sentiments; containing, or of the nature of, antithesis; contrasted..