dolorous

colours ... are associated with cheerfulness .. dolours is opposite

DOL(SOUNDS LIKE DULL)..and when are you DULL, when you are feeling SORRY for something.

dolorous-remember dolorous umbridge from harry potter ,she is so sad and sorrowful.

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DULL ARE US

Many religious points of view considered money as the source of human sorrows. So dolorous from "dollars" so means sorrowful.

Link it with 'dollar'

DOLO(sway)+ROZ(evereday)....it's painful to sway like grass everyday without any reason....

The prices of DOLOR($) in Iran are dolorous.