Webster's Revised Unabridged Dictionary · 1913

Opposition

Opposition , noun

[French, from Latin oppositio. See Opposite.]

1.
The act of opposing; an attempt to check, restrain, or defeat; resistance.
The counterpoise of so great an opposition. — Shakespeare
Virtue which breaks through all opposition. — Milton
2.
The state of being placed over against; situation so as to front something else. — Milton
3.
Repugnance; contrariety of sentiment, interest, or purpose; antipathy. — Shakespeare
4.
That which opposes; an obstacle; specifically, the aggregate of persons or things opposing; hence, in politics and parliamentary practice, the party opposed to the party in power.
5.
(Astronomy) The situation of a heavenly body with respect to another when in the part of the heavens directly opposite to it; especially, the position of a planet or satellite when its longitude differs from that of the sun 180°; -- signified by the symbol {not transcribed}; as, {not transcribed} J S, opposition of Jupiter to the sun.
6.
(Logic) The relation between two propositions when, having the same subject and predicate, they differ in quantity, or in quality, or in both; or between two propositions which have the same matter but a different form.