“My colleague makes digs disguised as jokes”

What could be going on

Sarcastic: Fits exactly; check whether the jokes are mostly at others' expense.

Passive aggression: Fits if the jokes carry anger they won't say directly.

Envy: Fits if the digs target things you're good at.

Contempt: Fits if the jokes come with eye-rolls or a sneer.

Humour as deflection: Fits if humour is how they avoid serious feelings in general.

Everyday sadism: Fits if they seem to enjoy making people uncomfortable.

Also said as

• she makes sarcastic comments about me in meetings
• he says it's just banter but it hurts
• my coworker is always sarcastic
• passive-aggressive jokes at work
• coworker makes snide comments
• my colleague insults me and says he's only joking