discordant

1. Not in accord or harmony; conflicting, incompatible.Examples: "[N]o other kind of liuing beaſtes both behold the fayrenes and the bewtie of the wordle^([sic – meaning worlde]), or is moued with anny reſpect of ſauours, but only for the diuerſity of meates, nother perceaueth the concordaunt and diſcordante diſtaunces of ſoundes, and tunes […]"; "But hovv fatally ſecure ſhould vve be, if God ſhould permit this Syren alvvaies to entertain us vvith her muſic, and ſhould not by ſome diſcordant grating notes, interrupt our raptures, and recal us to ſober thoughts?"; "VVar, vvith diſcordant Notes and jarring Noiſe, / The Harmony of Peace deſtroys."Synonyms: absonant, absonous, at variance, disconsonant, discordable, inaccordant, inconcinnous, incongruentAntonyms: accordant, concordant, consonant, nondiscordant, undiscordant, accordant, concordant, nondiscordantalsofiguratively

2. (geology, physical geography, originally US) Of a rock formation or other land feature, or its alignment: cutting across or transverse to neighbouring features.Examples: "Dikes may be discordant to country rock if they intrude at a high angle to the bedding."Antonyms: concordantphysical

3. (geology, physical geography, originally US) Of a rock formation or other land feature, or its alignment: cutting across or transverse to neighbouring features.Antonyms: concordantphysical

4. (chiefly genetics) Of two similar subjects, especially twins: differing in some characteristic.

5. (healthcare) Ellipsis of serodiscordant (“of a couple: with one partner HIV positive and the other HIV negative”).abbreviationalt-ofellipsis

6. (mathematics, statistics) Of figures, etc.: having opposite signs (for example, positive and negative).Antonyms: concordant