writing on the wall UK /ˈɹaɪtɪŋ ɒn ðə ˈwɔːl/US /ˈɹaɪtɪŋ ɑn ðə ˈwɔl/ noun1 •An ominous warning; a prediction of bad luck.He could see the writing on the wall months before the business failed.She should have seen the writing on the wall when her boss suggested a change of career. formswritings on the wall · writings on walls