sharply contrasted in character or purpose; "practices entirely antithetical to her professed beliefs"; "hope is antithetic to despair"
Pertaining to antithesis, or opposition of words and sentiments; containing, or of the nature of antithesis; contrasted
Something that is antithetical to something else is the opposite of it and is unable to exist with it. Their priorities are antithetical to those of environmentalists. exactly opposite to something antithetical to
{s} antithetic, contrary, opposed, involving antithesis, being in direct and unambiguous opposition