From Longman Dictionary of Contemporary Englishpuerilepuer‧ile /ˈpjʊəraɪl $ ˈpjʊrəl/ adjective formal STUPID/NOT SENSIBLEsilly and stupid SYN childish a puerile joke —puerility /pjʊˈrɪləti/ noun [uncountable]
Examples from the Corpus
puerile• puerile jokes• It is true that one can scan a whole evening's programmes and find only puerile junk on every channel.• An apparently astonishing claim, and a puerile one too, but true none the less.• What a puerile thing to say!• I have devoted myself to knowledge, while you prefer puerile things like prose, rhythm and metre.Origin puerile (1500-1600) French puéril, from Latin puerilis, from puer “boy, child” 