Wah do yuh
Also spelled: Wa do yuh, Wah du yu, Wha do yuh
Meaning
Means 'what's wrong with you?' or 'what's the matter with you?'. Depending on tone it ranges from genuine concern to sharp rebuke about someone acting strangely or foolishly.
Examples
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“Wah do yuh? Yuh a cry fi wah?”
What's wrong with you? What are you crying about?
Concerned tone, asking after distress.
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“Wah do yuh, man? Yuh caan drive so!”
What's the matter with you, man? You can't drive like that!
Scolding tone, reacting to bad behaviour.
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“Mi nuh know wah do yuh dis morning.”
I don't know what's gotten into you this morning.
Used as an embedded clause, not a direct question.
Origin
From 'wah' (English 'what') + 'do' (English) + 'yuh' (English 'you'); the construction parallels 'what ails you'.
How it's used
Tone is everything: softly it shows care, sharply it accuses. Directed at a stranger in anger it can escalate a confrontation.