Antithesis

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."

The second of two clauses forming an antithesis.

Opposition; contrast.

the juxtaposition of contrasting words or ideas to give a feeling of balance

exact opposite; "his theory is the antithesis of mine"