tar with the same brush UK /ˈtaː wɪ‿ðə seɪm ˈbɹʌʃ/US /ˈtaɹ wɪ‿ðə seɪm ˈbɹʌʃ/ verb1 •(figurative) To characterize (someone or something) using the same undesirable attribute, especially unjustly.The C Party have tarred themselves with the same brush as the B Party. formstarred with the same brush · tarring with the same brush · tars with the same brush