deserving or inciting pity; "a hapless victim"; "miserable victims of war"; "the shabby room struck her as extraordinarily pathetic"- Galsworthy; "piteous appeals for help"; "pitiable homeless children"; "a pitiful fate"; "Oh, you poor thing"; "his poor distorted limbs"; "a wretched life"
arousing affect; "the homecoming of the released hostages was an affecting scene"; "poignant grief cannot endure forever"; "his gratitude was simple and touching"
having a play of lustrous rainbow-like colors; "an iridescent oil slick"; "nacreous (or pearlescent) clouds looking like mother-of-pearl"; "a milky opalescent (or opaline) luster"