Definition of platitudinous in US English:

platitudinous

adjective

  • (of a remark or statement) used too often to be interesting or thoughtful; hackneyed.

    ‘this may sound platitudinous’
    • ‘Unfortunately, their occasionally forced and often platitudinous rhymes tend to sacrifice form for content, and usually lack the resonance of their many politically-minded counterparts.’
    • ‘Ideas endlessly repeated and permutated become platitudinous, trite, meaningless.’
    • ‘Both the words and the images articulate strong emotion with admirable economy and convey a sense of the preciousness of life without being sentimental, platitudinous or falsely hopeful.’
    • ‘Well I can't think of a more platitudinous, cliché-ridden speech that I've read in several years.’
    • ‘The tips are the same type of common sense platitudinous advice that columnists dispense on a regular basis.’
    hackneyed, overworked, overused, clichéd, banal, trite, commonplace, stock, stereotyped, stereotypical, set, well worn, stale, tired, vapid, inane, unimaginative, unoriginal, derivative, vieux jeu, dull, flat, conventional
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Pronunciation

platitudinous

/ˌpladiˈt(y)o͞od(ə)nəs//ˌplædɪˈt(j)ud(ə)nəs/