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.

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

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.