Entry 1 sense Webster, 1913 Trifling /trīf'-lĭng/ · Tri·fling · IPA /ˈtɹaɪfliŋ/ 01 a. Being of small value or importance; trivial; paltry; as, a trifling debt; a trifling affair. 1. Being of small value or importance; trivial; paltry; as, a trifling debt; a trifling affair.