They criticize to nitpick and demean you, not to empower you.
They frequently play devil’s advocate especially when it’s unnecessary.
They copy your mannerisms, your work, your behavior, anything they covet.
They rage excessively when challenged.
They rarely take accountability for their actions or say sorry.
They act superior to you and treat you with contempt, as if you were below them in some way.
They use chronic, vitriolic sarcasm.
They attempt to sabotage you in areas where they know you’re flourishing.
They compete with you rather than celebrate your accomplishments
They exaggerate your flaws to the point of absurdity.
And the lists goes on and on