"Bajer" is a colloquial term widely used in Spain and Latin America, which refers to a doubtful, inconsistent, or unreliable person. Fortunately, there are various synonyms in the Spanish language to replace this derogatory term without losing the meaning, such as "tramposo" (cheater), "mentiroso" (liar), "falso" (false), "engañador" (deceiver), "embustero" (deceitful), "impostor" (imposter), and "farsante" (charlatan). It is important to choose the proper synonym to describe someone as accurately as possible, avoiding generalizations and making sure to have proof to support any accusations. These synonyms can help to express one's opinions in a more appropriate and respectful manner, while conveying the intended message.