Ma'anar ƙamus na jimlar "bayyana jin" shine sadarwa ko isar da motsin rai, tunani, ko ra'ayi ta kalmomi, ayyuka, ko wasu nau'ikan furci. Yana nufin aikin gaya wa mutane abin da ke cikin zuciyarsa a fili, ko farin ciki ne, baƙin ciki, fushi, ko kuma wani abu dabam. Ana iya yin bayanin yadda ake ji ta hanyoyi daban-daban kamar rubutu, magana, motsin rai, ko magana ta fasaha, kuma wani muhimmin al’amari ne na sadarwar ɗan adam da dangantakar ɗan adam.