głupi jak but

== Polish == === Etymology === Literally, “dumb as a shoe”. === Pronunciation === IPA(key): /ˈɡwu.pi ˈjak ˈbut/ Syllabification: głu‧pi jak but === Adjective === głupi jak but (not comparable, no derived adverb) (idiomatic, simile) dumber than a rock, thick as a brick ==== Declension ==== === Further reading === głupi jak but in Wielki słownik języka polskiego, Instytut Języka Polskiego PAN głupi jak but in Polish dictionaries at PWN