immeasurably adv. + Add to list US //ˌɪˈmɛʒɝˌæbɫi// UK //ɪmˈɛʒəɹəbli// im·mea·sur·ably SynonymsAntonymsEtymology Synonyms boundlesslyinfinitely Antonyms measurablyOrigin From immeasurable + -ly.