1. tar with the same brush - Verb
2. tar with the same brush - Phrase
tar with the same brush (third-person singular simple present tars with the same brush, present participle tarring with the same brush, simple past and past participle tarred with the same brush)
(transitive, figuratively) To characterize (someone or something) using the same undesirable attribute, especially unjustly.
Synonyms: paint with the same brush, (dated) tar with the same stick
The C Party have tarred themselves with the same brush as the B Party.