What is the meaning of Discord?

Lack of concord, agreement or harmony.

Tension or strife resulting from a lack of agreement; dissension.

An inharmonious combination of simultaneously sounded tones; a dissonance.

Any harsh noise, or confused mingling of sounds.

To disagree; to fail to agree or harmonize; clash.

To untie things which are connected by a cord.

discordant

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Source: wiktionary.org